feat: implement word/phrase filters (#1990)

* feat: implement word filters * fix: more progress on word filters * fix: more progress * fix: more work * fix: more work * fix: more progress * fix: tweaks * fix: basic crud stuff * fix: more work * test: add tests * test: more test * fix: handle filter expiry correctly * fix: implement more efficient word filter logic * fix: better required labels * test: fix test
2021-03-13 17:31:17 -08:00 · 2021-03-13 17:31:17 -08:00 · 4adc8ff748
commit 4adc8ff748
--- a/package.json
+++ b/package.json
@ -39,6 +39,7 @@
    "build-vercel-json": "node -r esm bin/build-vercel-json.js"
  },
  "dependencies": {
+    "@formatjs/intl-listformat": "^5.0.10",
    "@formatjs/intl-locale": "^2.4.14",
    "@formatjs/intl-pluralrules": "^4.0.6",
    "@formatjs/intl-relativetimeformat": "^8.0.4",
--- a/src/client.js
+++ b/src/client.js
@ -4,8 +4,8 @@ import './routes/_utils/historyEvents'
 import './routes/_utils/loadingMask'
 import './routes/_utils/forceOnline'
 import { mark, stop } from './routes/_utils/marks'
-import { loadPolyfills } from './routes/_utils/loadPolyfills'
-import { loadNonCriticalPolyfills } from './routes/_utils/loadNonCriticalPolyfills'
+import { loadPolyfills } from './routes/_utils/polyfills/loadPolyfills'
+import { loadNonCriticalPolyfills } from './routes/_utils/polyfills/loadNonCriticalPolyfills'

 mark('loadPolyfills')
 loadPolyfills().then(() => {
--- a/src/intl/en-US.js
+++ b/src/intl/en-US.js
@ -214,9 +214,11 @@ export default {
  thirtyMinutes: '30 minutes',
  oneHour: '1 hour',
  sixHours: '6 hours',
+  twelveHours: '12 hours',
  oneDay: '1 day',
  threeDays: '3 days',
  sevenDays: '7 days',
+  never: 'Never',
  addEmoji: 'Insert emoji',
  addMedia: 'Add media (images, video, audio)',
  addPoll: 'Add poll',
@ -625,5 +627,28 @@ export default {
  showingOfflineContent: 'Internet request failed. Showing offline content.',
  youAreOffline: 'You seem to be offline. You can still read toots while offline.',
  // Snackbar UI
-  updateAvailable: 'App update available.'
+  updateAvailable: 'App update available.',
+  // Word/phrase filters
+  wordFilters: 'Word filters',
+  noFilters: 'You don\'t have any word filters.',
+  wordOrPhrase: 'Word or phrase',
+  contexts: 'Contexts',
+  addFilter: 'Add filter',
+  editFilter: 'Edit filter',
+  filterHome: 'Home and lists',
+  filterNotifications: 'Notifications',
+  filterPublic: 'Public timelines',
+  filterThread: 'Conversations',
+  filterAccount: 'Profiles',
+  filterUnknown: 'Unknown',
+  expireAfter: 'Expire after',
+  whereToFilter: 'Where to filter',
+  irreversible: 'Irreversible',
+  wholeWord: 'Whole word',
+  save: 'Save',
+  updatedFilter: 'Updated filter',
+  createdFilter: 'Created filter',
+  failedToModifyFilter: 'Failed to modify filter: {error}',
+  deletedFilter: 'Deleted filter',
+  required: 'Required'
 }
--- a/src/routes/_actions/addStatusOrNotification.js
+++ b/src/routes/_actions/addStatusOrNotification.js
@ -31,9 +31,9 @@ async function insertUpdatesIntoTimeline (instanceName, timelineName, updates) {
  console.log('itemSummariesToAdd', JSON.parse(JSON.stringify(itemSummariesToAdd)))
  console.log('updates.map(timelineItemToSummary)', JSON.parse(JSON.stringify(updates.map(timelineItemToSummary))))
  console.log('concat(itemSummariesToAdd, updates.map(timelineItemToSummary))',
-    JSON.parse(JSON.stringify(concat(itemSummariesToAdd, updates.map(timelineItemToSummary)))))
+    JSON.parse(JSON.stringify(concat(itemSummariesToAdd, updates.map(item => timelineItemToSummary(item, instanceName))))))
  const newItemSummariesToAdd = uniqBy(
-    concat(itemSummariesToAdd, updates.map(timelineItemToSummary)),
+    concat(itemSummariesToAdd, updates.map(item => timelineItemToSummary(item, instanceName))),
    _ => _.id
  )
  if (!isEqual(itemSummariesToAdd, newItemSummariesToAdd)) {
@ -78,7 +78,7 @@ async function insertUpdatesIntoThreads (instanceName, updates) {
      continue
    }
    const newItemSummariesToAdd = uniqBy(
-      concat(itemSummariesToAdd, validUpdates.map(timelineItemToSummary)),
+      concat(itemSummariesToAdd, validUpdates.map(item => timelineItemToSummary(item, instanceName))),
      _ => _.id
    )
    if (!isEqual(itemSummariesToAdd, newItemSummariesToAdd)) {
--- a/src/routes/_actions/filters.js
+++ b/src/routes/_actions/filters.js
@ -0,0 +1,63 @@
+import { store } from '../_store/store'
+import { createFilter, getFilters, updateFilter, deleteFilter as doDeleteFilter } from '../_api/filters'
+import { cacheFirstUpdateAfter, cacheFirstUpdateOnlyIfNotInCache } from '../_utils/sync'
+import { database } from '../_database/database'
+import { isEqual } from 'lodash-es'
+import { toast } from '../_components/toast/toast'
+import { formatIntl } from '../_utils/formatIntl'
+import { emit } from '../_utils/eventBus'
+
+async function syncFilters (instanceName, syncMethod) {
+  const { loggedInInstances } = store.get()
+  const accessToken = loggedInInstances[instanceName].access_token
+
+  await syncMethod(
+    () => getFilters(instanceName, accessToken),
+    () => database.getFilters(instanceName),
+    filters => database.setFilters(instanceName, filters),
+    filters => {
+      const { instanceFilters } = store.get()
+      if (!isEqual(instanceFilters[instanceName], filters)) { // avoid re-render if nothing changed
+        instanceFilters[instanceName] = filters
+        store.set({ instanceFilters })
+      }
+    }
+  )
+}
+
+export async function updateFiltersForInstance (instanceName) {
+  await syncFilters(instanceName, cacheFirstUpdateAfter)
+}
+
+export async function setupFiltersForInstance (instanceName) {
+  await syncFilters(instanceName, cacheFirstUpdateOnlyIfNotInCache)
+}
+
+export async function createOrUpdateFilter (instanceName, filter) {
+  const { loggedInInstances } = store.get()
+  const accessToken = loggedInInstances[instanceName].access_token
+  try {
+    if (filter.id) {
+      await updateFilter(instanceName, accessToken, filter)
+      /* no await */ toast.say('intl.updatedFilter')
+    } else {
+      await createFilter(instanceName, accessToken, filter)
+      /* no await */ toast.say('intl.createdFilter')
+    }
+    emit('wordFiltersChanged', instanceName)
+  } catch (err) {
+    /* no await */ toast.say(formatIntl('intl.failedToModifyFilter', err.message || ''))
+  }
+}
+
+export async function deleteFilter (instanceName, id) {
+  const { loggedInInstances } = store.get()
+  const accessToken = loggedInInstances[instanceName].access_token
+  try {
+    await doDeleteFilter(instanceName, accessToken, id)
+    /* no await */ toast.say('intl.deletedFilter')
+    emit('wordFiltersChanged', instanceName)
+  } catch (err) {
+    /* no await */ toast.say(formatIntl('intl.failedToModifyFilter', err.message || ''))
+  }
+}
--- a/src/routes/_actions/stream/processMessage.js
+++ b/src/routes/_actions/stream/processMessage.js
@ -1,8 +1,9 @@
 import { mark, stop } from '../../_utils/marks'
 import { deleteStatus } from '../deleteStatuses'
 import { addStatusOrNotification } from '../addStatusOrNotification'
+import { emit } from '../../_utils/eventBus'

-const KNOWN_EVENTS = ['update', 'delete', 'notification', 'conversation']
+const KNOWN_EVENTS = ['update', 'delete', 'notification', 'conversation', 'filters_changed']

 export function processMessage (instanceName, timelineName, message) {
  let { event, payload } = (message || {})
@ -36,6 +37,9 @@ export function processMessage (instanceName, timelineName, message) {
      // It will add new DMs as new conversations instead of updating existing threads
      addStatusOrNotification(instanceName, timelineName, payload.last_status)
      break
+    case 'filters_changed':
+      emit('wordFiltersChanged', instanceName)
+      break
  }
  stop('processMessage')
 }
--- a/src/routes/_actions/timeline.js
+++ b/src/routes/_actions/timeline.js
@ -98,7 +98,7 @@ async function fetchTimelineItemsFromNetwork (instanceName, accessToken, timelin
 async function addPagedTimelineItems (instanceName, timelineName, items) {
  console.log('addPagedTimelineItems, length:', items.length)
  mark('addPagedTimelineItemSummaries')
-  const newSummaries = items.map(timelineItemToSummary)
+  const newSummaries = items.map(item => timelineItemToSummary(item, instanceName))
  await addPagedTimelineItemSummaries(instanceName, timelineName, newSummaries)
  stop('addPagedTimelineItemSummaries')
 }
@ -154,7 +154,7 @@ async function fetchTimelineItems (instanceName, accessToken, timelineName, onli
 async function addTimelineItems (instanceName, timelineName, items, stale) {
  console.log('addTimelineItems, length:', items.length)
  mark('addTimelineItemSummaries')
-  const newSummaries = items.map(timelineItemToSummary)
+  const newSummaries = items.map(item => timelineItemToSummary(item, instanceName))
  addTimelineItemSummaries(instanceName, timelineName, newSummaries, stale)
  stop('addTimelineItemSummaries')
 }
--- a/src/routes/_api/filters.js
+++ b/src/routes/_api/filters.js
@ -0,0 +1,22 @@
+import { get, DEFAULT_TIMEOUT, post, WRITE_TIMEOUT, put, del } from '../_utils/ajax'
+import { auth, basename } from './utils'
+
+export function getFilters (instanceName, accessToken) {
+  const url = `${basename(instanceName)}/api/v1/filters`
+  return get(url, auth(accessToken), { timeout: DEFAULT_TIMEOUT })
+}
+
+export function createFilter (instanceName, accessToken, filter) {
+  const url = `${basename(instanceName)}/api/v1/filters`
+  return post(url, filter, auth(accessToken), { timeout: WRITE_TIMEOUT })
+}
+
+export function updateFilter (instanceName, accessToken, filter) {
+  const url = `${basename(instanceName)}/api/v1/filters/${filter.id}`
+  return put(url, filter, auth(accessToken), { timeout: WRITE_TIMEOUT })
+}
+
+export function deleteFilter (instanceName, accessToken, id) {
+  const url = `${basename(instanceName)}/api/v1/filters/${id}`
+  return del(url, auth(accessToken), { timeout: WRITE_TIMEOUT })
+}
--- a/src/routes/_components/dialog/asyncDialogs/importShowWordFilterDialog.js
+++ b/src/routes/_components/dialog/asyncDialogs/importShowWordFilterDialog.js
@ -0,0 +1,3 @@
+export const importShowWordFilterDialog = () => import(
+  /* webpackChunkName: 'showWordFilterDialog' */ '../creators/showWordFilterDialog'
+).then(mod => mod.default)
--- a/src/routes/_components/dialog/components/EmojiDialog.html
+++ b/src/routes/_components/dialog/components/EmojiDialog.html
@ -66,7 +66,7 @@
  import { doubleRAF } from '../../../_utils/doubleRAF'
  import { convertCustomEmojiToEmojiPickerFormat } from '../../../_utils/convertCustomEmojiToEmojiPickerFormat'
  import { supportsFocusVisible } from '../../../_utils/supportsFocusVisible'
-  import { importFocusVisible } from '../../../_utils/asyncPolyfills'
+  import { importFocusVisible } from '../../../_utils/polyfills/asyncPolyfills'
  import { emojiPickerI18n, emojiPickerDataSource, emojiPickerLocale } from '../../../_static/emojiPickerIntl'

  export default {
--- a/src/routes/_components/dialog/components/GenericConfirmationDialog.html
+++ b/src/routes/_components/dialog/components/GenericConfirmationDialog.html
@ -9,7 +9,7 @@
  <form class="confirmation-dialog-form">
    <slot></slot>
    <div class="confirmation-dialog-form-flex">
-      <button type="button" on:click="onPositive()">
+      <button type="button" disabled={confirmationButtonDisabled} on:click="onPositive()">
        {positiveText || 'OK'}
      </button>
      <button type="button" on:click="onNegative()">
--- a/src/routes/_components/dialog/components/WordFilterDialog.html
+++ b/src/routes/_components/dialog/components/WordFilterDialog.html
@ -0,0 +1,254 @@
+<GenericConfirmationDialog
+  {id}
+  {label}
+  {title}
+  {positiveText}
+  {confirmationButtonDisabled}
+  on:positive="save()">
+  <div class="word-filter-dialog">
+    <div class="word-filter-keyword">
+      <label for="word-filter-word-or-phrase" class="word-filter-keyword-label">
+        <span>{intl.wordOrPhrase}</span>
+        <!-- no need for aria-label="Required", the input is already marked as required -->
+        <span aria-hidden="true" class="required">*</span>
+      </label>
+      <input type="text"
+             required
+             autocomplete="off"
+             autocapitalize="off"
+             on:input="onWordOrPhraseChange(event)"
+             ref:wordInput
+             id="word-filter-word-or-phrase"
+      >
+    </div>
+    <div class="word-filter-expire-after" ref:expireSelectWrapper>
+      <span class="word-filter-label-like word-filter-expire-label">{intl.expireAfter}</span>
+      <Select className="word-filter-expiry-select"
+              options={expiryOptions}
+              defaultValue={expiryDefaultValue}
+              on:change="onExpiryChange(event)"
+              label="{intl.expireAfter}"
+      />
+    </div>
+    <div class="word-filter-where-to-filter">
+      <span class="word-filter-label-like" id="word-filter-where-to-filter-label">
+        <span>{intl.whereToFilter}</span>
+        <span aria-label="{intl.required}" class="required">*</span>
+      </span>
+      <ul class="word-filter-radio-list" aria-describedby="word-filter-where-to-filter-label" ref:contextCheckboxes>
+        {#each filterContexts as context}
+        <li>
+          <input type="checkbox"
+                 name="where-to-filter"
+                 value={context.value}
+                 on:change="onContextChange(event)"
+                 id="where-to-filter-{context.value}">
+          <label for="where-to-filter-{context.value}">{context.label}</label>
+        </li>
+        {/each}
+      </ul>
+    </div>
+    <div class="word-filter-irreversible">
+      <input type="checkbox"
+             name="irreversible"
+             ref:irreversibleCheckbox
+             id="word-filter-irreversible">
+      <label for="word-filter-irreversible">{intl.irreversible}</label>
+    </div>
+    <div class="word-filter-whole">
+      <input type="checkbox"
+             name="irreversible"
+             ref:wholeWordCheckbox
+             id="word-filter-whole">
+      <label for="word-filter-whole">{intl.wholeWord}</label>
+    </div>
+  </div>
+</GenericConfirmationDialog>
+<style>
+.word-filter-dialog {
+  padding: 20px 40px;
+  overflow-y: auto;
+  display: grid;
+  grid-template-areas: "keyword      expire"
+                       "context      context"
+                       "irreversible whole";
+  grid-row-gap: 20px;
+  grid-column-gap: 10px;
+}
+.word-filter-label-like {
+  font-size: 1.3em;
+}
+.word-filter-radio-list {
+  list-style: none;
+  margin-top: 5px;
+}
+.word-filter-keyword {
+  grid-area: keyword;
+}
+.word-filter-expire-after {
+  grid-area: expire;
+}
+.word-filter-where-to-filter {
+  grid-area: context;
+}
+.word-filter-irreversible {
+  grid-area: irreversible;
+}
+.word-filter-whole {
+  grid-area: whole;
+}
+.word-filter-keyword-label, .word-filter-expire-label {
+  margin-right: 10px;
+}
+.required {
+  color: var(--warn-color);
+}
+@media (max-width: 479px) {
+  .word-filter-dialog {
+    grid-template-areas: "keyword"
+                         "expire"
+                         "context"
+                         "irreversible"
+                         "whole";
+  }
+}
+</style>
+<script>
+  import GenericConfirmationDialog from './GenericConfirmationDialog.html'
+  import Select from '../../Select.html'
+  import { show } from '../helpers/showDialog'
+  import { close } from '../helpers/closeDialog'
+  import { oncreate as onCreateDialog } from '../helpers/onCreateDialog'
+  import { store } from '../../../_store/store'
+  import {
+    WORD_FILTER_CONTEXT_ACCOUNT,
+    WORD_FILTER_CONTEXT_HOME,
+    WORD_FILTER_CONTEXT_NOTIFICATIONS,
+    WORD_FILTER_CONTEXT_PUBLIC,
+    WORD_FILTER_CONTEXT_THREAD,
+    WORD_FILTER_CONTEXTS,
+    WORD_FILTER_EXPIRY_DEFAULT,
+    WORD_FILTER_EXPIRY_OPTIONS
+  } from '../../../_static/wordFilters'
+  import { createOrUpdateFilter } from '../../../_actions/filters'
+
+  export default {
+    async oncreate () {
+      onCreateDialog.call(this)
+      this.syncFilterToDom(this.get().filter)
+      this.computeConfirmationButtonDisabled()
+    },
+    store: () => store,
+    data: () => ({
+      filter: undefined,
+      instanceName: undefined,
+      positiveText: 'intl.save',
+      expiryOptions: WORD_FILTER_EXPIRY_OPTIONS,
+      expiryDefaultValue: WORD_FILTER_EXPIRY_DEFAULT,
+      filterContexts: [
+        {
+          label: 'intl.filterHome',
+          value: WORD_FILTER_CONTEXT_HOME
+        },
+        {
+          label: 'intl.filterNotifications',
+          value: WORD_FILTER_CONTEXT_NOTIFICATIONS
+        },
+        {
+          label: 'intl.filterPublic',
+          value: WORD_FILTER_CONTEXT_PUBLIC
+        },
+        {
+          label: 'intl.filterThread',
+          value: WORD_FILTER_CONTEXT_THREAD
+        },
+        {
+          label: 'intl.filterAccount',
+          value: WORD_FILTER_CONTEXT_ACCOUNT
+        }
+      ],
+      confirmationButtonDisabled: false
+    }),
+    methods: {
+      show,
+      close,
+      onWordOrPhraseChange (event) {
+        this.computeConfirmationButtonDisabled()
+      },
+      onExpiryChange (event) {
+
+      },
+      onContextChange (event) {
+        this.computeConfirmationButtonDisabled()
+      },
+      async save () {
+        const filter = this.syncDomToFilter()
+        const { instanceName } = this.get()
+        await createOrUpdateFilter(instanceName, filter)
+      },
+      computeConfirmationButtonDisabled () {
+        const confirmationButtonDisabled = !(this.refs.wordInput.value.replace(/\s+/g, '') &&
+          [...this.refs.contextCheckboxes.querySelectorAll('input')].some(checkbox => checkbox.checked))
+        this.set({ confirmationButtonDisabled })
+      },
+      syncFilterToDom (filter) {
+        if (!filter) {
+          filter = {
+            phrase: '',
+            expires_at: WORD_FILTER_EXPIRY_DEFAULT,
+            context: [...WORD_FILTER_CONTEXTS],
+            irreversible: false,
+            whole_word: true
+          }
+        }
+
+        this.refs.wordInput.value = filter.phrase
+
+        let expiresAtValue = 0
+        if (filter.expires_at) {
+          const now = Date.now()
+          expiresAtValue = WORD_FILTER_EXPIRY_OPTIONS.filter(_ => _.value)
+            .sort((a, b) => {
+              // expires_at is an absolute timestamp, so sort by whichever one is closest given the current datetime
+              const aAbsoluteTime = now + (a.value * 1000)
+              const bAbsoluteTime = now + (b.value * 1000)
+              const aDelta = Math.abs(new Date(filter.expires_at).getTime() - aAbsoluteTime)
+              const bDelta = Math.abs(new Date(filter.expires_at).getTime() - bAbsoluteTime)
+              return aDelta < bDelta ? -1 : 1
+            })[0].value
+        }
+
+        this.refs.expireSelectWrapper.querySelector('select').value = expiresAtValue
+        for (const checkbox of [...this.refs.contextCheckboxes.querySelectorAll('input')]) {
+          checkbox.checked = filter.context.includes(checkbox.value)
+        }
+        this.refs.irreversibleCheckbox.checked = !!filter.irreversible
+        this.refs.wholeWordCheckbox.checked = !!filter.whole_word
+      },
+      syncDomToFilter () {
+        const existingFilter = this.get().filter
+        const filter = {
+          id: existingFilter && existingFilter.id
+        }
+        filter.phrase = this.refs.wordInput.value
+        const select = this.refs.expireSelectWrapper.querySelector('select')
+        const selectValue = parseInt(select.value, 10)
+        // When creating a new filter or updating a filter, `expires_in` is the number of seconds from now
+        // that the filter expires. When reading, it's `expires_at` which is a string ISO timestamp.
+        // Also, if you added a timeout for a filter, you can't change it to Never for some reason.
+        filter.expires_in = selectValue || null
+        filter.context = [...this.refs.contextCheckboxes.querySelectorAll('input')]
+          .filter(input => input.checked)
+          .map(input => input.value)
+        filter.irreversible = this.refs.irreversibleCheckbox.checked
+        filter.whole_word = this.refs.wholeWordCheckbox.checked
+
+        return filter
+      }
+    },
+    components: {
+      GenericConfirmationDialog,
+      Select
+    }
+  }
+</script>
--- a/src/routes/_components/dialog/creators/showWordFilterDialog.js
+++ b/src/routes/_components/dialog/creators/showWordFilterDialog.js
@ -0,0 +1,12 @@
+import WordFilterDialog from '../components/WordFilterDialog.html'
+import { showDialog } from './showDialog'
+
+export default function showReportDialog ({ filter, instanceName }) {
+  const label = filter ? 'intl.editFilter' : 'intl.addFilter'
+  return showDialog(WordFilterDialog, {
+    label,
+    title: label,
+    filter,
+    instanceName
+  })
+}
--- a/src/routes/_components/settings/instance/GenericInstanceSettings.html
+++ b/src/routes/_components/settings/instance/GenericInstanceSettings.html
@ -15,17 +15,9 @@
    {/each}
  </form>
 </div>
-<style>
-  .generic-instance-settings {
-    background: var(--form-bg);
-    border: 1px solid var(--main-border);
-    border-radius: 4px;
-    display: block;
-    padding: 20px;
-    line-height: 2em;
-  }
-</style>
+<GenericInstanceSettingsStyle/>
 <script>
+  import GenericInstanceSettingsStyle from './GenericInstanceSettingsStyle.html'
  import { store } from '../../../_store/store'

  export default {
@ -43,6 +35,9 @@
        this.store.setInstanceSetting(instanceName, target.name, target.checked)
      }
    },
-    store: () => store
+    store: () => store,
+    components: {
+      GenericInstanceSettingsStyle
+    }
  }
 </script>
--- a/src/routes/_components/settings/instance/GenericInstanceSettingsStyle.html
+++ b/src/routes/_components/settings/instance/GenericInstanceSettingsStyle.html
@ -0,0 +1,10 @@
+<style>
+  :global(.generic-instance-settings) {
+    background: var(--form-bg);
+    border: 1px solid var(--main-border);
+    border-radius: 4px;
+    display: block;
+    padding: 20px;
+    line-height: 2em;
+  }
+</style>
--- a/src/routes/_components/settings/instance/InstanceUserProfile.html
+++ b/src/routes/_components/settings/instance/InstanceUserProfile.html
@ -1,4 +1,4 @@
-<div class="acct-current-user">
+<div class="generic-instance-settings acct-current-user">
  <div class="acct-avatar">
    <Avatar account={verifyCredentials} size="big" />
  </div>
@ -10,12 +10,10 @@
    <AccountDisplayName account={verifyCredentials} />
  </span>
 </div>
+<GenericInstanceSettingsStyle />
 <style>
  .acct-current-user {
-    background: var(--form-bg);
-    border: 1px solid var(--main-border);
-    border-radius: 4px;
-    padding: 20px;
+    line-height: 1.4;
    display: grid;
    align-items: center;
    font-size: 1.3em;
@ -40,12 +38,14 @@
  import ExternalLink from '../../ExternalLink.html'
  import Avatar from '../../Avatar.html'
  import AccountDisplayName from '../../profile/AccountDisplayName.html'
+  import GenericInstanceSettingsStyle from './GenericInstanceSettingsStyle.html'

  export default {
    components: {
      Avatar,
      ExternalLink,
-      AccountDisplayName
+      AccountDisplayName,
+      GenericInstanceSettingsStyle
    }
  }
 </script>
--- a/src/routes/_components/settings/instance/PushNotificationSettings.html
+++ b/src/routes/_components/settings/instance/PushNotificationSettings.html
@ -1,4 +1,4 @@
-<div class="push-notifications">
+<div class="generic-instance-settings">
  {#if pushNotificationsSupport === false}
    <p>{intl.browserDoesNotSupportPush}</p>
  {:elseif $notificationPermission === "denied"}
@ -23,15 +23,8 @@
    {/each}
  </form>
 </div>
+<GenericInstanceSettingsStyle/>
 <style>
-  .push-notifications {
-    background: var(--form-bg);
-    border: 1px solid var(--main-border);
-    border-radius: 4px;
-    display: block;
-    padding: 20px;
-    line-height: 2em;
-  }
  form[disabled="true"] {
    opacity: 0.5;
  }
@ -40,6 +33,7 @@
  }
 </style>
 <script>
+  import GenericInstanceSettingsStyle from './GenericInstanceSettingsStyle.html'
  import { store } from '../../../_store/store'
  import { importShowTextConfirmationDialog } from '../../dialog/asyncDialogs/importShowTextConfirmationDialog.js'
  import { logOutOfInstance } from '../../../_actions/instances'
@ -118,6 +112,9 @@
          }
        }
      }
+    },
+    components: {
+      GenericInstanceSettingsStyle
    }
  }
 </script>
--- a/src/routes/_components/settings/instance/ThemeSettings.html
+++ b/src/routes/_components/settings/instance/ThemeSettings.html
@ -1,4 +1,4 @@
-<form class="theme-chooser" aria-label="{intl.chooseTheme}">
+<form class="generic-instance-settings" aria-label="{intl.chooseTheme}">
  <div class="theme-groups">
    {#each themeGroups as themeGroup}
    <div class="theme-group">
@ -24,15 +24,8 @@
    {/each}
  </div>
 </form>
+<GenericInstanceSettingsStyle/>
 <style>
-  .theme-chooser {
-    background: var(--form-bg);
-    border: 1px solid var(--main-border);
-    border-radius: 4px;
-    display: block;
-    padding: 20px;
-    line-height: 2em;
-  }
  .theme-groups {
    display: grid;
    grid-template-columns: 1fr 1fr;
@ -89,6 +82,7 @@
  }
 </style>
 <script>
+  import GenericInstanceSettingsStyle from './GenericInstanceSettingsStyle.html'
  import { changeTheme } from '../../../_actions/instances'
  import { store } from '../../../_store/store'
  import { themes } from '../../../_static/themes'
@ -134,6 +128,9 @@
        const { selectedTheme, instanceName } = this.get()
        changeTheme(instanceName, selectedTheme)
      }
+    },
+    components: {
+      GenericInstanceSettingsStyle
    }
  }
 </script>
--- a/src/routes/_components/settings/instance/WordFilterSettings.html
+++ b/src/routes/_components/settings/instance/WordFilterSettings.html
@ -0,0 +1,96 @@
+<div class="generic-instance-settings word-filters">
+  {#if filters.length}
+    <table class="word-filters-table">
+      <thead>
+        <tr>
+          <th>{intl.wordOrPhrase}</th>
+          <th>{intl.contexts}</th>
+          <th></th>
+          <th></th>
+        </tr>
+      </thead>
+      <tbody>
+        {#each formattedFilters as filter (filter.id)}
+          <tr>
+            <td>{filter.phrase}</td>
+            <td>{filter.formattedContexts}</td>
+            <td>
+              <IconButton label="{intl.edit}" href="#fa-pencil" on:click="edit(filter)" clickListener={true} />
+            </td>
+            <td>
+              <IconButton label="{intl.delete}" href="#fa-trash" on:click="del(filter)" clickListener={true} />
+            </td>
+          </tr>
+        {/each}
+      </tbody>
+    </table>
+  {:else}
+    <p class="word-filters-p">{intl.noFilters}</p>
+  {/if}
+  <button type="button" on:click="add()">{intl.addFilter}</button>
+</div>
+<GenericInstanceSettingsStyle />
+<style>
+  .word-filters-table {
+    width: 100%
+  }
+  p.word-filters-p, .word-filters-table {
+    margin: 0 0 10px 0;
+  }
+</style>
+<script>
+  import GenericInstanceSettingsStyle from './GenericInstanceSettingsStyle.html'
+  import IconButton from '../../IconButton.html'
+  import { store } from '../../../_store/store'
+  import { LOCALE } from '../../../_static/intl'
+  import { importShowWordFilterDialog } from '../../dialog/asyncDialogs/importShowWordFilterDialog'
+  import { deleteFilter } from '../../../_actions/filters'
+
+  const listFormat = new Intl.ListFormat(LOCALE, { style: 'long', type: 'conjunction' })
+
+export default {
+    store: () => store,
+    computed: {
+      filters: ({ instanceName, $instanceFilters }) => $instanceFilters[instanceName] || [],
+      formattedFilters: ({ filters }) => filters.map(filter => ({
+        ...filter,
+        formattedContexts: listFormat.format(filter.context.map(context => {
+          switch (context) {
+            case 'home':
+              return 'intl.filterHome'
+            case 'notifications':
+              return 'intl.filterNotifications'
+            case 'public':
+              return 'intl.filterPublic'
+            case 'thread':
+              return 'intl.filterThread'
+            case 'account':
+              return 'intl.filterAccount'
+            default:
+              return 'intl.filterUnknown'
+          }
+        }))
+      }))
+    },
+    methods: {
+      async add () {
+        const { instanceName } = this.get()
+        const showWordFilterDialog = await importShowWordFilterDialog()
+        await showWordFilterDialog({ instanceName })
+      },
+      async edit (filter) {
+        const { instanceName } = this.get()
+        const showWordFilterDialog = await importShowWordFilterDialog()
+        await showWordFilterDialog({ instanceName, filter })
+      },
+      async del (filter) {
+        const { instanceName } = this.get()
+        await deleteFilter(instanceName, filter.id)
+      }
+    },
+    components: {
+      GenericInstanceSettingsStyle,
+      IconButton
+    }
+  }
+</script>
--- a/src/routes/_database/meta.js
+++ b/src/routes/_database/meta.js
@ -63,3 +63,11 @@ export async function getFollowRequestCount (instanceName) {
 export async function setFollowRequestCount (instanceName, value) {
  return setMetaProperty(instanceName, 'followRequestCount', value)
 }
+
+export async function getFilters (instanceName) {
+  return getMetaProperty(instanceName, 'filters')
+}
+
+export async function setFilters (instanceName, value) {
+  return setMetaProperty(instanceName, 'filters', value)
+}
--- a/src/routes/_pages/settings/instances/[instanceName].html
+++ b/src/routes/_pages/settings/instances/[instanceName].html
@ -4,15 +4,16 @@
  {#if verifyCredentials}
    <h2>{intl.loggedInAs}</h2>
    <InstanceUserProfile {verifyCredentials} />
+    <h2>{intl.theme}</h2>
+    <ThemeSettings {instanceName} />
    <h2>{intl.homeTimelineFilters}</h2>
    <HomeTimelineFilterSettings {instanceName} />
    <h2>{intl.notificationFilters}</h2>
    <NotificationFilterSettings {instanceName} />
+    <h2>{intl.wordFilters}</h2>
+    <WordFilterSettings {instanceName} />
    <h2>{intl.pushNotifications}</h2>
    <PushNotificationSettings {instanceName} />
-    <h2>{intl.theme}</h2>
-    <ThemeSettings {instanceName} />
-
    <InstanceActions {instanceName} />
  {/if}
 </SettingsLayout>
@ -32,12 +33,17 @@
  import PushNotificationSettings from '../../../_components/settings/instance/PushNotificationSettings.html'
  import ThemeSettings from '../../../_components/settings/instance/ThemeSettings.html'
  import InstanceActions from '../../../_components/settings/instance/InstanceActions.html'
+  import WordFilterSettings from '../../../_components/settings/instance/WordFilterSettings.html'
  import { updateVerifyCredentialsForInstance } from '../../../_actions/instances'
+  import { updateFiltersForInstance } from '../../../_actions/filters'

  export default {
    async oncreate () {
      const { instanceName } = this.get()
-      await updateVerifyCredentialsForInstance(instanceName)
+      await Promise.all([
+        updateVerifyCredentialsForInstance(instanceName),
+        updateFiltersForInstance(instanceName)
+      ])
    },
    store: () => store,
    computed: {
@ -51,7 +57,8 @@
      ThemeSettings,
      InstanceActions,
      HomeTimelineFilterSettings,
-      NotificationFilterSettings
+      NotificationFilterSettings,
+      WordFilterSettings
    }
  }
 </script>
--- a/src/routes/_pages/settings/instances/add.html
+++ b/src/routes/_pages/settings/instances/add.html
@ -55,7 +55,7 @@
  }

  .form-error {
-    border: 2px solid red;
+    border: 2px solid var(--warn-color);
    border-radius: 2px;
    padding: 10px;
    font-size: 1.3em;
--- a/src/routes/_static/wordFilters.js
+++ b/src/routes/_static/wordFilters.js
@ -0,0 +1,48 @@
+export const WORD_FILTER_CONTEXT_HOME = 'home'
+export const WORD_FILTER_CONTEXT_NOTIFICATIONS = 'notifications'
+export const WORD_FILTER_CONTEXT_PUBLIC = 'public'
+export const WORD_FILTER_CONTEXT_THREAD = 'thread'
+export const WORD_FILTER_CONTEXT_ACCOUNT = 'account'
+
+export const WORD_FILTER_CONTEXTS = [
+  WORD_FILTER_CONTEXT_HOME,
+  WORD_FILTER_CONTEXT_NOTIFICATIONS,
+  WORD_FILTER_CONTEXT_PUBLIC,
+  WORD_FILTER_CONTEXT_THREAD,
+  WORD_FILTER_CONTEXT_ACCOUNT
+]
+
+// Someday we can maybe replace this with Intl.DurationFormat
+// https://github.com/tc39/proposal-intl-duration-format
+export const WORD_FILTER_EXPIRY_OPTIONS = [
+  {
+    value: 0,
+    label: 'intl.never'
+  },
+  {
+    value: 1800,
+    label: 'intl.thirtyMinutes'
+  },
+  {
+    value: 3600,
+    label: 'intl.oneHour'
+  },
+  {
+    value: 21600,
+    label: 'intl.sixHours'
+  },
+  {
+    value: 43200,
+    label: 'intl.twelveHours'
+  },
+  {
+    value: 86400,
+    label: 'intl.oneDay'
+  },
+  {
+    value: 604800,
+    label: 'intl.sevenDays'
+  }
+]
+
+export const WORD_FILTER_EXPIRY_DEFAULT = 0
--- a/src/routes/_store/computations/badgeComputations.js
+++ b/src/routes/_store/computations/badgeComputations.js
@ -0,0 +1,28 @@
+import { get } from '../../_utils/lodash-lite'
+
+export function badgeComputations (store) {
+  store.compute('numberOfNotifications',
+    ['filteredTimelineNotificationItemSummaries', 'disableNotificationBadge'],
+    (filteredTimelineNotificationItemSummaries, disableNotificationBadge) => (
+      (!disableNotificationBadge && filteredTimelineNotificationItemSummaries)
+        ? filteredTimelineNotificationItemSummaries.length
+        : 0
+    )
+  )
+  store.compute('hasNotifications',
+    ['numberOfNotifications', 'currentPage'],
+    (numberOfNotifications, currentPage) => (
+      currentPage !== 'notifications' && !!numberOfNotifications
+    )
+  )
+
+  store.compute('numberOfFollowRequests',
+    ['followRequestCounts', 'currentInstance'],
+    (followRequestCounts, currentInstance) => get(followRequestCounts, [currentInstance], 0)
+  )
+
+  store.compute('hasFollowRequests',
+    ['numberOfFollowRequests'],
+    (numberOfFollowRequests) => !!numberOfFollowRequests
+  )
+}
--- a/src/routes/_store/computations/instanceComputations.js
+++ b/src/routes/_store/computations/instanceComputations.js
@ -14,6 +14,7 @@ export function instanceComputations (store) {
  computeForInstance(store, 'currentInstanceInfo', 'instanceInfos', null)
  computeForInstance(store, 'pinnedPage', 'pinnedPages', '/local')
  computeForInstance(store, 'lists', 'instanceLists', [])
+  computeForInstance(store, 'filters', 'instanceFilters', [])
  computeForInstance(store, 'currentStatusModifications', 'statusModifications', null)
  computeForInstance(store, 'currentCustomEmoji', 'customEmoji', [])
  computeForInstance(store, 'currentComposeData', 'composeData', {})
--- a/src/routes/_store/computations/loggedInComputations.js
+++ b/src/routes/_store/computations/loggedInComputations.js
@ -1,10 +1,18 @@
 // like loggedInObservers.js, these can be lazy-loaded once the user is actually logged in
 import { timelineComputations } from './timelineComputations'
 import { autosuggestComputations } from './autosuggestComputations'
-
 import { store } from '../store'
+import { wordFilterComputations } from './wordFilterComputations'
+import { badgeComputations } from './badgeComputations'
+import { timelineFilterComputations } from './timelineFilterComputations'
+import { mark, stop } from '../../_utils/marks'

 export function loggedInComputations () {
+  mark('loggedInComputations')
+  wordFilterComputations(store)
  timelineComputations(store)
+  timelineFilterComputations(store)
+  badgeComputations(store)
  autosuggestComputations(store)
+  stop('loggedInComputations')
 }
--- a/src/routes/_store/computations/timelineComputations.js
+++ b/src/routes/_store/computations/timelineComputations.js
@ -1,15 +1,5 @@
 import { get } from '../../_utils/lodash-lite'
 import { getFirstIdFromItemSummaries, getLastIdFromItemSummaries } from '../../_utils/getIdFromItemSummaries'
-import {
-  HOME_REBLOGS,
-  HOME_REPLIES,
-  NOTIFICATION_REBLOGS,
-  NOTIFICATION_FOLLOWS,
-  NOTIFICATION_FAVORITES,
-  NOTIFICATION_POLLS,
-  NOTIFICATION_MENTIONS
-} from '../../_static/instanceSettings'
-import { createFilterFunction } from '../../_utils/createFilterFunction'
 import { mark, stop } from '../../_utils/marks'

 function computeForTimeline (store, key, defaultValue) {
@ -21,31 +11,6 @@ function computeForTimeline (store, key, defaultValue) {
  )
 }

-// Compute just the boolean, e.g. 'showPolls', so that we can use that boolean as
-// the input to the timelineFilterFunction computations. This should reduce the need to
-// re-compute the timelineFilterFunction over and over.
-function computeTimelineFilter (store, computationName, timelinesToSettingsKeys) {
-  store.compute(
-    computationName,
-    ['currentInstance', 'instanceSettings', 'currentTimeline'],
-    (currentInstance, instanceSettings, currentTimeline) => {
-      const settingsKey = timelinesToSettingsKeys[currentTimeline]
-      return settingsKey ? get(instanceSettings, [currentInstance, settingsKey], true) : true
-    }
-  )
-}
-
-// Ditto for notifications, which we always have to keep track of due to the notification count.
-function computeNotificationFilter (store, computationName, key) {
-  store.compute(
-    computationName,
-    ['currentInstance', 'instanceSettings'],
-    (currentInstance, instanceSettings) => {
-      return get(instanceSettings, [currentInstance, key], true)
-    }
-  )
-}
-
 export function timelineComputations (store) {
  mark('timelineComputations')
  computeForTimeline(store, 'timelineItemSummaries', null)
@ -78,98 +43,5 @@ export function timelineComputations (store) {
  store.compute('lastTimelineItemId', ['timelineItemSummaries'], (timelineItemSummaries) => (
    getLastIdFromItemSummaries(timelineItemSummaries)
  ))
-
-  computeTimelineFilter(store, 'timelineShowReblogs', { home: HOME_REBLOGS, notifications: NOTIFICATION_REBLOGS })
-  computeTimelineFilter(store, 'timelineShowReplies', { home: HOME_REPLIES })
-  computeTimelineFilter(store, 'timelineShowFollows', { notifications: NOTIFICATION_FOLLOWS })
-  computeTimelineFilter(store, 'timelineShowFavs', { notifications: NOTIFICATION_FAVORITES })
-  computeTimelineFilter(store, 'timelineShowMentions', { notifications: NOTIFICATION_MENTIONS })
-  computeTimelineFilter(store, 'timelineShowPolls', { notifications: NOTIFICATION_POLLS })
-
-  computeNotificationFilter(store, 'timelineNotificationShowReblogs', NOTIFICATION_REBLOGS)
-  computeNotificationFilter(store, 'timelineNotificationShowFollows', NOTIFICATION_FOLLOWS)
-  computeNotificationFilter(store, 'timelineNotificationShowFavs', NOTIFICATION_FAVORITES)
-  computeNotificationFilter(store, 'timelineNotificationShowMentions', NOTIFICATION_MENTIONS)
-  computeNotificationFilter(store, 'timelineNotificationShowPolls', NOTIFICATION_POLLS)
-
-  store.compute(
-    'timelineFilterFunction',
-    [
-      'timelineShowReblogs', 'timelineShowReplies', 'timelineShowFollows',
-      'timelineShowFavs', 'timelineShowMentions', 'timelineShowPolls'
-    ],
-    (showReblogs, showReplies, showFollows, showFavs, showMentions, showPolls) => (
-      createFilterFunction(showReblogs, showReplies, showFollows, showFavs, showMentions, showPolls)
-    )
-  )
-
-  store.compute(
-    'timelineNotificationFilterFunction',
-    [
-      'timelineNotificationShowReblogs', 'timelineNotificationShowFollows',
-      'timelineNotificationShowFavs', 'timelineNotificationShowMentions',
-      'timelineNotificationShowPolls'
-    ],
-    (showReblogs, showFollows, showFavs, showMentions, showPolls) => (
-      createFilterFunction(showReblogs, true, showFollows, showFavs, showMentions, showPolls)
-    )
-  )
-
-  store.compute(
-    'filteredTimelineItemSummaries',
-    ['timelineItemSummaries', 'timelineFilterFunction'],
-    (timelineItemSummaries, timelineFilterFunction) => {
-      return timelineItemSummaries && timelineItemSummaries.filter(timelineFilterFunction)
-    }
-  )
-
-  store.compute(
-    'filteredTimelineItemSummariesToAdd',
-    ['timelineItemSummariesToAdd', 'timelineFilterFunction'],
-    (timelineItemSummariesToAdd, timelineFilterFunction) => {
-      return timelineItemSummariesToAdd && timelineItemSummariesToAdd.filter(timelineFilterFunction)
-    }
-  )
-
-  store.compute('timelineNotificationItemSummaries',
-    ['timelineData_timelineItemSummariesToAdd', 'timelineFilterFunction', 'currentInstance'],
-    (root, timelineFilterFunction, currentInstance) => (
-      get(root, [currentInstance, 'notifications'])
-    )
-  )
-
-  store.compute(
-    'filteredTimelineNotificationItemSummaries',
-    ['timelineNotificationItemSummaries', 'timelineNotificationFilterFunction'],
-    (timelineNotificationItemSummaries, timelineNotificationFilterFunction) => (
-      timelineNotificationItemSummaries && timelineNotificationItemSummaries.filter(timelineNotificationFilterFunction)
-    )
-  )
-
-  store.compute('numberOfNotifications',
-    ['filteredTimelineNotificationItemSummaries', 'disableNotificationBadge'],
-    (filteredTimelineNotificationItemSummaries, disableNotificationBadge) => (
-      (!disableNotificationBadge && filteredTimelineNotificationItemSummaries)
-        ? filteredTimelineNotificationItemSummaries.length
-        : 0
-    )
-  )
-
-  store.compute('hasNotifications',
-    ['numberOfNotifications', 'currentPage'],
-    (numberOfNotifications, currentPage) => (
-      currentPage !== 'notifications' && !!numberOfNotifications
-    )
-  )
-
-  store.compute('numberOfFollowRequests',
-    ['followRequestCounts', 'currentInstance'],
-    (followRequestCounts, currentInstance) => get(followRequestCounts, [currentInstance], 0)
-  )
-
-  store.compute('hasFollowRequests',
-    ['numberOfFollowRequests'],
-    (numberOfFollowRequests) => !!numberOfFollowRequests
-  )
  stop('timelineComputations')
 }
--- a/src/routes/_store/computations/timelineFilterComputations.js
+++ b/src/routes/_store/computations/timelineFilterComputations.js
@ -0,0 +1,139 @@
+import {
+  HOME_REBLOGS,
+  HOME_REPLIES,
+  NOTIFICATION_FAVORITES,
+  NOTIFICATION_FOLLOWS, NOTIFICATION_MENTIONS, NOTIFICATION_POLLS,
+  NOTIFICATION_REBLOGS
+} from '../../_static/instanceSettings'
+import {
+  WORD_FILTER_CONTEXT_ACCOUNT,
+  WORD_FILTER_CONTEXT_HOME,
+  WORD_FILTER_CONTEXT_NOTIFICATIONS,
+  WORD_FILTER_CONTEXT_PUBLIC, WORD_FILTER_CONTEXT_THREAD
+} from '../../_static/wordFilters'
+import { createFilterFunction } from '../../_utils/createFilterFunction'
+import { get } from '../../_utils/lodash-lite'
+
+// Compute just the boolean, e.g. 'showPolls', so that we can use that boolean as
+// the input to the timelineFilterFunction computations. This should reduce the need to
+// re-compute the timelineFilterFunction over and over.
+function computeTimelineFilter (store, computationName, timelinesToSettingsKeys) {
+  store.compute(
+    computationName,
+    ['currentInstance', 'instanceSettings', 'currentTimeline'],
+    (currentInstance, instanceSettings, currentTimeline) => {
+      const settingsKey = timelinesToSettingsKeys[currentTimeline]
+      return settingsKey ? get(instanceSettings, [currentInstance, settingsKey], true) : true
+    }
+  )
+}
+
+// Ditto for notifications, which we always have to keep track of due to the notification count.
+function computeNotificationFilter (store, computationName, key) {
+  store.compute(
+    computationName,
+    ['currentInstance', 'instanceSettings'],
+    (currentInstance, instanceSettings) => {
+      return get(instanceSettings, [currentInstance, key], true)
+    }
+  )
+}
+
+export function timelineFilterComputations (store) {
+  computeTimelineFilter(store, 'timelineShowReblogs', { home: HOME_REBLOGS, notifications: NOTIFICATION_REBLOGS })
+  computeTimelineFilter(store, 'timelineShowReplies', { home: HOME_REPLIES })
+  computeTimelineFilter(store, 'timelineShowFollows', { notifications: NOTIFICATION_FOLLOWS })
+  computeTimelineFilter(store, 'timelineShowFavs', { notifications: NOTIFICATION_FAVORITES })
+  computeTimelineFilter(store, 'timelineShowMentions', { notifications: NOTIFICATION_MENTIONS })
+  computeTimelineFilter(store, 'timelineShowPolls', { notifications: NOTIFICATION_POLLS })
+
+  computeNotificationFilter(store, 'timelineNotificationShowReblogs', NOTIFICATION_REBLOGS)
+  computeNotificationFilter(store, 'timelineNotificationShowFollows', NOTIFICATION_FOLLOWS)
+  computeNotificationFilter(store, 'timelineNotificationShowFavs', NOTIFICATION_FAVORITES)
+  computeNotificationFilter(store, 'timelineNotificationShowMentions', NOTIFICATION_MENTIONS)
+  computeNotificationFilter(store, 'timelineNotificationShowPolls', NOTIFICATION_POLLS)
+
+  store.compute(
+    'timelineWordFilterContext',
+    ['currentTimeline'],
+    (currentTimeline) => {
+      if (!currentTimeline) {
+        return
+      }
+      if (currentTimeline === 'home' || currentTimeline.startsWith('list/')) {
+        return WORD_FILTER_CONTEXT_HOME
+      }
+      if (currentTimeline === 'notifications' || currentTimeline.startsWith('notifications/')) {
+        return WORD_FILTER_CONTEXT_NOTIFICATIONS
+      }
+      if (currentTimeline === 'federated' || currentTimeline === 'local' || currentTimeline.startsWith('tag/')) {
+        return WORD_FILTER_CONTEXT_PUBLIC
+      }
+      if (currentTimeline.startsWith('account/')) {
+        return WORD_FILTER_CONTEXT_ACCOUNT
+      }
+      if (currentTimeline.startsWith('status/')) {
+        return WORD_FILTER_CONTEXT_THREAD
+      }
+      // return undefined otherwise
+    }
+  )
+
+  // This one is based on whatever the current timeline is
+  store.compute(
+    'timelineFilterFunction',
+    [
+      'timelineShowReblogs', 'timelineShowReplies', 'timelineShowFollows',
+      'timelineShowFavs', 'timelineShowMentions', 'timelineShowPolls',
+      'timelineWordFilterContext'
+    ],
+    (showReblogs, showReplies, showFollows, showFavs, showMentions, showPolls, wordFilterContext) => (
+      createFilterFunction(showReblogs, showReplies, showFollows, showFavs, showMentions, showPolls, wordFilterContext)
+    )
+  )
+
+  // The reason there is a completely separate flow just for notifications is that we need to
+  // know which notifications are filtered at all times so that the little number badge is correct.
+  store.compute(
+    'timelineNotificationFilterFunction',
+    [
+      'timelineNotificationShowReblogs', 'timelineNotificationShowFollows',
+      'timelineNotificationShowFavs', 'timelineNotificationShowMentions',
+      'timelineNotificationShowPolls'
+    ],
+    (showReblogs, showFollows, showFavs, showMentions, showPolls) => (
+      createFilterFunction(showReblogs, true, showFollows, showFavs, showMentions, showPolls, WORD_FILTER_CONTEXT_NOTIFICATIONS)
+    )
+  )
+
+  store.compute(
+    'filteredTimelineItemSummaries',
+    ['timelineItemSummaries', 'timelineFilterFunction'],
+    (timelineItemSummaries, timelineFilterFunction) => {
+      return timelineItemSummaries && timelineItemSummaries.filter(timelineFilterFunction)
+    }
+  )
+
+  store.compute(
+    'filteredTimelineItemSummariesToAdd',
+    ['timelineItemSummariesToAdd', 'timelineFilterFunction'],
+    (timelineItemSummariesToAdd, timelineFilterFunction) => {
+      return timelineItemSummariesToAdd && timelineItemSummariesToAdd.filter(timelineFilterFunction)
+    }
+  )
+
+  store.compute('timelineNotificationItemSummaries',
+    ['timelineData_timelineItemSummariesToAdd', 'timelineFilterFunction', 'currentInstance'],
+    (root, timelineFilterFunction, currentInstance) => (
+      get(root, [currentInstance, 'notifications'])
+    )
+  )
+
+  store.compute(
+    'filteredTimelineNotificationItemSummaries',
+    ['timelineNotificationItemSummaries', 'timelineNotificationFilterFunction'],
+    (timelineNotificationItemSummaries, timelineNotificationFilterFunction) => (
+      timelineNotificationItemSummaries && timelineNotificationItemSummaries.filter(timelineNotificationFilterFunction)
+    )
+  )
+}
--- a/src/routes/_store/computations/wordFilterComputations.js
+++ b/src/routes/_store/computations/wordFilterComputations.js
@ -0,0 +1,21 @@
+import { createRegexFromFilter } from '../../_utils/createRegexFromFilter'
+
+export function wordFilterComputations (store) {
+  // unexpiredInstanceFilters is calculated based on `now` and `instanceFilters`,
+  // but it's computed with observers rather than compute() to avoid excessive recalcs
+  store.compute(
+    'currentFilters',
+    ['unexpiredInstanceFilters', 'currentInstance'],
+    (unexpiredInstanceFilters, currentInstance) => unexpiredInstanceFilters[currentInstance] || []
+  )
+
+  store.compute('unexpiredInstanceFiltersWithRegexes', ['unexpiredInstanceFilters'], unexpiredInstanceFilters => {
+    return Object.fromEntries(Object.entries(unexpiredInstanceFilters).map(([instanceName, filters]) => {
+      const filtersWithRegexes = filters.map(filter => ({
+        ...filter,
+        regex: createRegexFromFilter(filter)
+      }))
+      return [instanceName, filtersWithRegexes]
+    }))
+  })
+}
--- a/src/routes/_store/observers/instanceObservers.js
+++ b/src/routes/_store/observers/instanceObservers.js
@ -7,6 +7,7 @@ import { scheduleIdleTask } from '../../_utils/scheduleIdleTask'
 import { mark, stop } from '../../_utils/marks'
 import { store } from '../store'
 import { updateFollowRequestCountIfLockedAccount } from '../../_actions/followRequests'
+import { setupFiltersForInstance } from '../../_actions/filters'

 // stream to watch for home timeline updates and notifications
 let currentInstanceStream
@ -44,6 +45,7 @@ async function refreshInstanceData (instanceName) {
  // these are all low-priority
  scheduleIdleTask(() => setupCustomEmojiForInstance(instanceName))
  scheduleIdleTask(() => setupListsForInstance(instanceName))
+  scheduleIdleTask(() => setupFiltersForInstance(instanceName))
  scheduleIdleTask(() => updatePushSubscriptionForInstance(instanceName))

  // these are the only critical ones
--- a/src/routes/_store/observers/loggedInObservers.js
+++ b/src/routes/_store/observers/loggedInObservers.js
@ -6,12 +6,14 @@ import { notificationPermissionObservers } from './notificationPermissionObserve
 import { customScrollbarObservers } from './customScrollbarObservers'
 import { customEmojiObservers } from './customEmojiObservers'
 import { cleanup } from './cleanup'
+import { wordFilterObservers } from './wordFilterObservers'

 // These observers can be lazy-loaded when the user is actually logged in.
 // Prevents circular dependencies and reduces the size of main.js
 export function loggedInObservers () {
  instanceObservers()
  timelineObservers()
+  wordFilterObservers()
  notificationObservers()
  autosuggestObservers()
  notificationPermissionObservers()
--- a/src/routes/_store/observers/wordFilterObservers.js
+++ b/src/routes/_store/observers/wordFilterObservers.js
@ -0,0 +1,96 @@
+import { on } from '../../_utils/eventBus'
+import { updateFiltersForInstance } from '../../_actions/filters'
+import { store } from '../store'
+import { isEqual } from 'lodash-es'
+import { computeFilterContextsForStatusOrNotification } from '../../_utils/computeFilterContextsForStatusOrNotification'
+import { database } from '../../_database/database'
+import { mark, stop } from '../../_utils/marks'
+
+export function wordFilterObservers () {
+  if (!process.browser) {
+    return
+  }
+  on('wordFiltersChanged', instanceName => {
+    /* no await */ updateFiltersForInstance(instanceName)
+  })
+
+  // compute `unexpiredInstanceFilters` based on `now` and `instanceFilters`. `now` updates every 10 seconds.
+  function updateUnexpiredInstanceFiltersIfUnchanged (now, instanceFilters) {
+    const unexpiredInstanceFilters = Object.fromEntries(Object.entries(instanceFilters).map(([instanceName, filters]) => {
+      const unexpiredFilters = filters.filter(filter => (
+        !filter.expires_at || new Date(filter.expires_at).getTime() >= now
+      ))
+      return [instanceName, unexpiredFilters]
+    }))
+
+    // don't force an update/recalc if nothing changed
+    if (!isEqual(store.get().unexpiredInstanceFilters, unexpiredInstanceFilters)) {
+      console.log('updated unexpiredInstanceFilters', unexpiredInstanceFilters)
+      store.set({ unexpiredInstanceFilters })
+    }
+  }
+
+  store.observe('now', now => {
+    const { instanceFilters } = store.get()
+    updateUnexpiredInstanceFiltersIfUnchanged(now, instanceFilters)
+  })
+
+  store.observe('instanceFilters', instanceFilters => {
+    const { now } = store.get()
+    updateUnexpiredInstanceFiltersIfUnchanged(now, instanceFilters)
+  })
+
+  store.observe('unexpiredInstanceFiltersWithRegexes', async unexpiredInstanceFiltersWithRegexes => {
+    console.log('unexpiredInstanceFiltersWithRegexes changed, recomputing filterContexts')
+    mark('update timeline item summary filter contexts')
+    // Whenever the filters change, we need to re-compute the filterContexts on the TimelineSummaries.
+    // This is a bit of an odd design, but we do it for perf. See timelineItemToSummary.js for details.
+    let {
+      timelineData_timelineItemSummaries: timelineItemSummaries,
+      timelineData_timelineItemSummariesToAdd: timelineItemSummariesToAdd
+    } = store.get()
+
+    timelineItemSummaries = timelineItemSummaries || {}
+    timelineItemSummariesToAdd = timelineItemSummariesToAdd || {}
+
+    let somethingChanged = false
+
+    await Promise.all(Object.entries(unexpiredInstanceFiltersWithRegexes).map(async ([instanceName, filtersWithRegexes]) => {
+      const timelinesToSummaries = timelineItemSummaries[instanceName] || {}
+      const timelinesToSummariesToAdd = timelineItemSummariesToAdd[instanceName] || {}
+      const summariesToUpdate = [
+        ...(Object.values(timelinesToSummaries).flat()),
+        ...(Object.values(timelinesToSummariesToAdd).flat())
+      ]
+      console.log(`Attempting to update filters for ${summariesToUpdate.length} item summaries`)
+      await Promise.all(summariesToUpdate.map(async summary => {
+        try {
+          const isNotification = summary.type
+          const item = await (isNotification
+            ? database.getNotification(instanceName, summary.id)
+            : database.getStatus(instanceName, summary.id)
+          )
+          const newFilterContexts = computeFilterContextsForStatusOrNotification(item, filtersWithRegexes)
+          if (!isEqual(summary.filterContexts, newFilterContexts)) {
+            somethingChanged = true
+            summary.filterContexts = newFilterContexts
+          }
+        } catch (err) {
+          console.error(err)
+          // not stored in the database anymore, just ignore
+        }
+      }))
+    }))
+
+    // The previous was an async operation, so the timelinesItemSummaries or timelineItemSummariesToAdd
+    // may have changed. But we need to make sure that the filterContexts are updated in the store
+    // So just force an update here.
+    if (somethingChanged) {
+      console.log('Word filters changed, forcing an update')
+      // eslint-disable-next-line camelcase
+      const { timelineData_timelineItemSummaries, timelineData_timelineItemSummariesToAdd } = store.get()
+      store.set({ timelineData_timelineItemSummaries, timelineData_timelineItemSummariesToAdd })
+    }
+    stop('update timeline item summary filter contexts')
+  }, { init: false })
+}
--- a/src/routes/_store/store.js
+++ b/src/routes/_store/store.js
@ -45,9 +45,11 @@ const persistedState = {

 const nonPersistedState = {
  customEmoji: {},
+  unexpiredInstanceFilters: {},
  followRequestCounts: {},
  instanceInfos: {},
  instanceLists: {},
+  instanceFilters: {},
  online: !process.browser || navigator.onLine,
  pinnedStatuses: {},
  polls: {},
--- a/src/routes/_utils/computeFilterContextsForStatusOrNotification.js
+++ b/src/routes/_utils/computeFilterContextsForStatusOrNotification.js
@ -0,0 +1,18 @@
+import { createSearchIndexFromStatusOrNotification } from './createSearchIndexFromStatusOrNotification'
+import { uniq } from 'lodash-es'
+
+export function computeFilterContextsForStatusOrNotification (statusOrNotification, filtersWithRegexes) {
+  if (!filtersWithRegexes || !filtersWithRegexes.length) {
+    // avoid computing the search index, just bail out
+    return undefined
+  }
+  // the searchIndex is really just a string of text
+  const searchIndex = createSearchIndexFromStatusOrNotification(statusOrNotification)
+  const res = filtersWithRegexes && uniq(filtersWithRegexes
+    .filter(({ regex }) => regex.test(searchIndex))
+    .map(_ => _.context)
+    .flat())
+
+  // return undefined instead of a new array to reduce memory usage of TimelineSummary
+  return (res && res.length) ? res : undefined
+}
--- a/src/routes/_utils/createFilterFunction.js
+++ b/src/routes/_utils/createFilterFunction.js
@ -1,14 +1,13 @@
 // create a function for filtering timeline item summaries

-function noFilter () {
-  return true
-}
-
-export function createFilterFunction (showReblogs, showReplies, showFollows, showFavs, showMentions, showPolls) {
-  if (showReblogs && showReplies && showFollows && showFavs && showMentions && showPolls) {
-    return noFilter // fast path for the default setting
-  }
+export const createFilterFunction = (
+  showReblogs, showReplies, showFollows, showFavs, showMentions, showPolls, wordFilterContext
+) => {
  return item => {
+    if (item.filterContexts && item.filterContexts.includes(wordFilterContext)) {
+      return false
+    }
+
    switch (item.type) {
      case 'poll':
        return showPolls
--- a/src/routes/_utils/createRegexFromFilter.js
+++ b/src/routes/_utils/createRegexFromFilter.js
@ -0,0 +1,20 @@
+// copy-pasta'd from mastodon
+// https://github.com/tootsuite/mastodon/blob/2ff01f7/app/javascript/mastodon/selectors/index.js#L40-L63
+const escapeRegExp = string =>
+  string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&') // $& means the whole matched string
+
+export function createRegexFromFilter (filter) {
+  let expr = escapeRegExp(filter.phrase)
+
+  if (filter.whole_word) {
+    if (/^[\w]/.test(expr)) {
+      expr = `\\b${expr}`
+    }
+
+    if (/[\w]$/.test(expr)) {
+      expr = `${expr}\\b`
+    }
+  }
+
+  return new RegExp(expr, 'i')
+}
--- a/src/routes/_utils/createSearchIndexFromStatusOrNotification.js
+++ b/src/routes/_utils/createSearchIndexFromStatusOrNotification.js
@ -0,0 +1,18 @@
+let domParser
+
+// copy-pasta'd from
+// https://github.com/tootsuite/mastodon/blob/2ff01f7/app/javascript/mastodon/actions/importer/normalizer.js#L58-L75
+export const createSearchIndexFromStatusOrNotification = statusOrNotification => {
+  const status = statusOrNotification.status || statusOrNotification // status on a notification
+  const originalStatus = status.reblog || status
+  domParser = domParser || new DOMParser()
+  const spoilerText = originalStatus.spoiler_text || ''
+  const searchContent = ([spoilerText, originalStatus.content]
+    .concat(
+      (originalStatus.poll && originalStatus.poll.options)
+        ? originalStatus.poll.options.map(option => option.title)
+        : []
+    ))
+    .join('\n\n').replace(/<br\s*\/?>/g, '\n').replace(/<\/p><p>/g, '\n\n')
+  return domParser.parseFromString(searchContent, 'text/html').documentElement.textContent
+}
--- a/src/routes/_utils/eventBus.js
+++ b/src/routes/_utils/eventBus.js
@ -7,11 +7,17 @@ if (process.browser) {
 }

 export function on (eventName, component, method) {
+  if (typeof method === 'undefined') {
+    method = component
+    component = undefined
+  }
  const callback = method.bind(component)
  eventBus.on(eventName, callback)
-  component.on('destroy', () => {
-    eventBus.removeListener(eventName, callback)
-  })
+  if (component) {
+    component.on('destroy', () => {
+      eventBus.removeListener(eventName, callback)
+    })
+  }
 }

 export const emit = eventBus.emit.bind(eventBus)
--- a/src/routes/_utils/polyfills/asyncPolyfills.js
+++ b/src/routes/_utils/polyfills/asyncPolyfills.js
@ -10,3 +10,7 @@ export const importFocusVisible = () => import(
 export const importRelativeTimeFormat = () => import(
  /* webpackChunkName: '$polyfill$-relative-time-format' */ './relativeTimeFormatPolyfill'
 )
+
+export const importListFormat = () => import(
+  /* webpackChunkName: '$polyfill$-list-format' */ './listFormatPolyfill'
+)
--- a/src/routes/_utils/polyfills/listFormatPolyfill.js
+++ b/src/routes/_utils/polyfills/listFormatPolyfill.js
@ -0,0 +1,7 @@
+// Thank you Safari
+// https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Intl/ListFormat#browser_compatibility
+// Also note I'm not going to do anything fancy here for loading the polyfill locale data.
+// Safari can just get English every time.
+
+import '@formatjs/intl-listformat/polyfill'
+import '@formatjs/intl-listformat/locale-data/en'
--- a/src/routes/_utils/polyfills/loadNonCriticalPolyfills.js
+++ b/src/routes/_utils/polyfills/loadNonCriticalPolyfills.js
@ -1,5 +1,5 @@
 import { importFocusVisible } from './asyncPolyfills'
-import { supportsFocusVisible } from './supportsFocusVisible'
+import { supportsFocusVisible } from '../supportsFocusVisible'

 export function loadNonCriticalPolyfills () {
  return Promise.all([
--- a/src/routes/_utils/polyfills/loadPolyfills.js
+++ b/src/routes/_utils/polyfills/loadPolyfills.js
@ -1,6 +1,7 @@
 import {
  importRequestIdleCallback,
-  importRelativeTimeFormat
+  importRelativeTimeFormat,
+  importListFormat
 } from './asyncPolyfills'

 export function loadPolyfills () {
@ -10,6 +11,7 @@ export function loadPolyfills () {
      typeof Intl.RelativeTimeFormat !== 'function' ||
      typeof Intl.Locale !== 'function' ||
      typeof Intl.PluralRules !== 'function'
-    ) && importRelativeTimeFormat()
+    ) && importRelativeTimeFormat(),
+    typeof Intl.ListFormat !== 'function' && importListFormat()
  ])
 }
--- a/src/routes/_utils/polyfills/relativeTimeFormatPolyfill.js
+++ b/src/routes/_utils/polyfills/relativeTimeFormatPolyfill.js
--- a/src/routes/_utils/timelineItemToSummary.js
+++ b/src/routes/_utils/timelineItemToSummary.js
@ -1,13 +1,24 @@
+import { computeFilterContextsForStatusOrNotification } from './computeFilterContextsForStatusOrNotification'
+import { store } from '../_store/store'
+
 class TimelineSummary {
-  constructor (item) {
+  constructor (item, instanceName) {
    this.id = item.id
    this.accountId = item.account.id
    this.replyId = (item.in_reply_to_id) || undefined
    this.reblogId = (item.reblog && item.reblog.id) || undefined
    this.type = item.type || undefined
+
+    // This is admittedly a weird place to do the filtering logic. But there are a few reasons to do it here:
+    // 1. Avoid computing html-to-text (expensive) for users who don't have any filters (probably most users)
+    // 2. Avoiding keeping the entire html-to-text in memory at all times for all summaries
+    // 3. Filters probably change infrequently. When they do, we can just update the summaries
+    const { unexpiredInstanceFiltersWithRegexes } = store.get()
+    const filtersWithRegexes = unexpiredInstanceFiltersWithRegexes[instanceName]
+    this.filterContexts = computeFilterContextsForStatusOrNotification(item, filtersWithRegexes)
  }
 }

-export function timelineItemToSummary (item) {
-  return new TimelineSummary(item)
+export function timelineItemToSummary (item, instanceName) {
+  return new TimelineSummary(item, instanceName)
 }
--- a/src/scss/variables.scss
+++ b/src/scss/variables.scss
@ -1,5 +1,7 @@
 :root {

+  --warn-color: #e14154; // reddish for warnings/errors
+
  //
  // Vertical and horizontal padding for the status-article element (Status.html, Notification.html)
  //
--- a/tests/serverActions.js
+++ b/tests/serverActions.js
@ -12,6 +12,7 @@ import { submitMedia } from './submitMedia'
 import { voteOnPoll } from '../src/routes/_api/polls'
 import { POLL_EXPIRY_DEFAULT } from '../src/routes/_static/polls'
 import { createList, getLists } from '../src/routes/_api/lists'
+import { createFilter, deleteFilter, getFilters } from '../src/routes/_api/filters'

 global.fetch = fetch
 global.File = FileApi.File
@ -102,3 +103,14 @@ export async function createListAs (username, title) {
 export async function getListsAs (username) {
  return getLists(instanceName, users[username].accessToken)
 }
+
+export async function deleteAllWordFiltersAs (username) {
+  const accessToken = users[username].accessToken
+  const filters = await getFilters(instanceName, accessToken)
+  await Promise.all(filters.map(({ id }) => deleteFilter(instanceName, accessToken, id)))
+}
+
+export async function createWordFilterAs (username, filter) {
+  const accessToken = users[username].accessToken
+  await createFilter(instanceName, accessToken, filter)
+}
--- a/tests/spec/138-word-filters.js
+++ b/tests/spec/138-word-filters.js
@ -0,0 +1,176 @@
+import { Selector as $ } from 'testcafe'
+import { loginAsFoobar } from '../roles'
+import { createWordFilterAs, deleteAllWordFiltersAs, postAs, reblogStatusAs } from '../serverActions'
+import { WORD_FILTER_CONTEXT_NOTIFICATIONS, WORD_FILTER_CONTEXTS } from '../../src/routes/_static/wordFilters'
+import {
+  getNthStatusContent, getUrl,
+  homeNavButton,
+  modalDialog,
+  notificationsNavButton,
+  settingsNavButton,
+  sleep
+} from '../utils'
+
+fixture`138-word-filters.js`
+  .page`http://localhost:4002`
+  .afterEach(async () => {
+    await deleteAllWordFiltersAs('foobar')
+  })
+
+const goToWordFilterSettings = async t => {
+  await t
+    .click(settingsNavButton)
+    .click($('a').withText('Instances'))
+    .click($('a').withText('localhost:3000'))
+    .hover($('h2').withText('Word filters'))
+}
+
+const addFilter = async (t, phrase, tweak) => {
+  await t
+    .click($('button').withText('Add filter'))
+    .expect(modalDialog.hasAttribute('aria-hidden')).notOk()
+    .typeText($('input[type=text]#word-filter-word-or-phrase'), phrase)
+  if (tweak) {
+    await tweak(t)
+  }
+  await t
+    .click($('button').withText('Save'))
+    .expect(modalDialog.exists).notOk()
+}
+
+test('Can filter basic words', async t => {
+  await postAs('admin', 'do not filter me!')
+  await postAs('admin', 'filterMeOut okay!')
+  await postAs('admin', 'filterMeOutTooEvenThoughItIsOneBigWord!')
+  await sleep(500)
+  await loginAsFoobar(t)
+  await goToWordFilterSettings(t)
+  await addFilter(t, 'filterMeOut', async t => {
+    // uncheck "whole word"
+    await t
+      .click($('input#word-filter-whole'))
+    await sleep(500)
+  })
+  await t
+    .click(homeNavButton)
+    .expect(getUrl()).eql('http://localhost:4002/')
+  await t
+    .expect(getNthStatusContent(1).innerText).eql('do not filter me!')
+})
+
+test('Can filter whole words', async t => {
+  await postAs('admin', 'do not filter me!')
+  await postAs('admin', 'anotherFilter okay!')
+  await postAs('admin', 'anotherFilterEvenThoughItIsOneBigWord!')
+  await sleep(500)
+  await loginAsFoobar(t)
+  await goToWordFilterSettings(t)
+  await addFilter(t, 'filterMeOut')
+  await t
+    .click(homeNavButton)
+    .expect(getUrl()).eql('http://localhost:4002/')
+  await t
+    .expect(getNthStatusContent(1).innerText).eql('anotherFilterEvenThoughItIsOneBigWord!')
+})
+
+test('Can add filters on the fly', async t => {
+  await postAs('admin', 'hehehehehehe')
+  await postAs('admin', 'hohohohohoho')
+  await postAs('admin', 'hahahahahaha')
+  await sleep(500)
+  await loginAsFoobar(t)
+  await t
+    .expect(getNthStatusContent(1).innerText).eql('hahahahahaha')
+  await goToWordFilterSettings(t)
+  await t
+    .expect($('body').innerText).contains('You don\'t have any word filters.')
+  await addFilter(t, 'hahahahahaha')
+  await t
+    .click(homeNavButton)
+    .expect(getUrl()).eql('http://localhost:4002/')
+    .expect(getNthStatusContent(1).innerText).eql('hohohohohoho')
+  await goToWordFilterSettings(t)
+  await addFilter(t, 'hohohohohoho')
+  await t
+    .click(homeNavButton)
+    .expect(getUrl()).eql('http://localhost:4002/')
+    .expect(getNthStatusContent(1).innerText).eql('hehehehehehe')
+})
+
+test('Can delete filters on the fly', async t => {
+  await postAs('admin', 'yalayala')
+  await postAs('admin', 'yoloyolo')
+  await sleep(500)
+  await loginAsFoobar(t)
+  await t
+    .expect(getNthStatusContent(1).innerText).eql('yoloyolo')
+  await goToWordFilterSettings(t)
+  await addFilter(t, 'yoloyolo')
+  await t
+    .click(homeNavButton)
+    .expect(getUrl()).eql('http://localhost:4002/')
+    .expect(getNthStatusContent(1).innerText).eql('yalayala')
+  await goToWordFilterSettings(t)
+  await t
+    .click($('button[aria-label="Delete"]'))
+    .expect($('body').innerText).contains('You don\'t have any word filters.')
+    .click(homeNavButton)
+    .expect(getUrl()).eql('http://localhost:4002/')
+  await t
+    .expect(getNthStatusContent(1).innerText).eql('yoloyolo')
+})
+
+test('Can update filters when change comes from the server', async t => {
+  await postAs('admin', 'ohwowohwow')
+  await postAs('admin', 'ohboyohboy')
+  await sleep(500)
+  await loginAsFoobar(t)
+  await t
+    .expect(getNthStatusContent(1).innerText).eql('ohboyohboy')
+  await sleep(500)
+  await createWordFilterAs('foobar', {
+    phrase: 'ohboyohboy',
+    context: [...WORD_FILTER_CONTEXTS],
+    whole_word: false
+  })
+  await t
+    .expect(getNthStatusContent(1).innerText).eql('ohwowohwow')
+})
+
+test('Can filter notifications', async t => {
+  await postAs('admin', 'hey @foobar do not filter this pretty please')
+  await postAs('admin', 'hey @foobar filterthisplease')
+  await sleep(500)
+  await loginAsFoobar(t)
+
+  await goToWordFilterSettings(t)
+  await addFilter(t, 'filterthisplease', async t => {
+    // uncheck all contexts except notifications
+    const contexts = WORD_FILTER_CONTEXTS.filter(_ => _ !== WORD_FILTER_CONTEXT_NOTIFICATIONS)
+    for (const context of contexts) {
+      await t.click(`input[id="where-to-filter-${context}"]`)
+    }
+    await sleep(200)
+  })
+  await t
+    .click(homeNavButton)
+    .expect(getUrl()).eql('http://localhost:4002/')
+    .expect(getNthStatusContent(1).innerText).contains('filterthisplease')
+    .click(notificationsNavButton)
+    .expect(getUrl()).contains('notifications')
+    .expect(getNthStatusContent(1).innerText).contains('do not filter this pretty please')
+})
+
+test('Can filter reblogs', async t => {
+  await postAs('admin', 'you definitely want to see this')
+  const { id } = await postAs('baz', 'dontwanttoseethis')
+  await reblogStatusAs('admin', id)
+  await sleep(500)
+  await loginAsFoobar(t)
+  await goToWordFilterSettings(t)
+  await addFilter(t, 'dontwanttoseethis')
+  await t
+    .click(homeNavButton)
+    .expect(getUrl()).eql('http://localhost:4002/')
+    .expect(getNthStatusContent(1).innerText).contains('you definitely want to see this')
+})
--- a/yarn.lock
+++ b/yarn.lock
@ -978,6 +978,13 @@
  dependencies:
    tslib "^2.0.1"

+"@formatjs/ecma402-abstract@1.6.2":
+  version "1.6.2"
+  resolved "https://registry.yarnpkg.com/@formatjs/ecma402-abstract/-/ecma402-abstract-1.6.2.tgz#9d064a2cf790769aa6721e074fb5d5c357084bb9"
+  integrity sha512-aLBODrSRhHaL/0WdQ0T2UsGqRbdtRRHqqrs4zwNQoRsGBEtEAvlj/rgr6Uea4PSymVJrbZBoAyECM2Z3Pq4i0g==
+  dependencies:
+    tslib "^2.1.0"
+
 "@formatjs/intl-getcanonicallocales@1.5.3":
  version "1.5.3"
  resolved "https://registry.yarnpkg.com/@formatjs/intl-getcanonicallocales/-/intl-getcanonicallocales-1.5.3.tgz#b5978462340da1502502c3fde1c4abccff8f3b8e"
@ -986,6 +993,14 @@
    cldr-core "38"
    tslib "^2.0.1"

+"@formatjs/intl-listformat@^5.0.10":
+  version "5.0.10"
+  resolved "https://registry.yarnpkg.com/@formatjs/intl-listformat/-/intl-listformat-5.0.10.tgz#9f8c4ad5e8a925240e151ba794c41fba01f742cc"
+  integrity sha512-FLtrtBPfBoeteRlYcHvThYbSW2YdJTllR0xEnk6cr/6FRArbfPRYMzDpFYlESzb5g8bpQMKZy+kFQ6V2Z+5KaA==
+  dependencies:
+    "@formatjs/ecma402-abstract" "1.6.2"
+    tslib "^2.1.0"
+
 "@formatjs/intl-locale@^2.4.14":
  version "2.4.14"
  resolved "https://registry.yarnpkg.com/@formatjs/intl-locale/-/intl-locale-2.4.14.tgz#9852678ee1ba3214e75f2e21fd0010d06e998d93"
@ -7546,7 +7561,7 @@ tslib@^1.9.0, tslib@^1.9.3:
  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.13.0.tgz#c881e13cc7015894ed914862d276436fa9a47043"
  integrity sha512-i/6DQjL8Xf3be4K/E6Wgpekn5Qasl1usyw++dAA35Ue5orEn65VIxOA+YvNNl9HV3qv70T7CNwjODHZrLwvd1Q==

-tslib@^2.0.1:
+tslib@^2.0.1, tslib@^2.1.0:
  version "2.1.0"
  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.1.0.tgz#da60860f1c2ecaa5703ab7d39bc05b6bf988b97a"
  integrity sha512-hcVC3wYEziELGGmEEXue7D75zbwIIVUMWAVbHItGPx0ziyXxrOMQx4rQEVEV45Ut/1IotuEvwqPopzIOkDMf0A==