kopia lustrzana https://github.com/Tldraw/Tldraw
56 wiersze
1.7 KiB
TypeScript
56 wiersze
1.7 KiB
TypeScript
import { SerializedSchema } from './StoreSchema'
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/** @public */
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export const compareSchemas = (a: SerializedSchema, b: SerializedSchema): 0 | 1 | -1 => {
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if (a.schemaVersion > b.schemaVersion) {
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return 1
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}
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if (a.schemaVersion < b.schemaVersion) {
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return -1
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}
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if (a.storeVersion > b.storeVersion) {
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return 1
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}
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if (a.storeVersion < b.storeVersion) {
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return -1
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}
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for (const key of Object.keys(a.recordVersions)) {
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const aRecordVersion = a.recordVersions[key]
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const bRecordVersion = b.recordVersions[key]
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if (aRecordVersion.version > bRecordVersion.version) {
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return 1
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}
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if (aRecordVersion.version < bRecordVersion.version) {
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return -1
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}
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if ('subTypeVersions' in aRecordVersion && !('subTypeVersions' in bRecordVersion)) {
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// todo: this assumes that subtypes were added in an up migration rather than removed. We should probably
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// make sure that in either case the parent version is bumped
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return 1
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}
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if (!('subTypeVersions' in aRecordVersion) && 'subTypeVersions' in bRecordVersion) {
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// todo: this assumes that subtypes were added in an up migration rather than removed. We should probably
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// make sure that in either case the parent version is bumped
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return -1
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}
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if (!('subTypeVersions' in aRecordVersion) || !('subTypeVersions' in bRecordVersion)) {
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// this will never happen
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continue
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}
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for (const subType of Object.keys(aRecordVersion.subTypeVersions)) {
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const aSubTypeVersion = aRecordVersion.subTypeVersions[subType]
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const bSubTypeVersion = bRecordVersion.subTypeVersions[subType]
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if (aSubTypeVersion > bSubTypeVersion) {
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return 1
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}
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if (aSubTypeVersion < bSubTypeVersion) {
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return -1
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}
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}
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}
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return 0
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}
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