This issue tracks the progress in adding native TypeScript support to the @wordpress/block-editor package. Currently open PRs:

• TypeScript: Convert factory utils in data package to TS #67667
• TypeScript: migrate deprecated package to TS #70362
• api-fetch: Convert api-fetch package to TypeScript #67669
• block-serialization-default-parser: TypeScript: Migrate block-serialization-default-parser to TS. (#70507) #70766
• browserslist-config: [WIP] Migrate browserslist-config package to TypeScript #70521
• date: Convert date package to TypeScript  #67665
• dom-ready: Convert dom-ready package to TypeScript  #67671
• element: Migrate element package to TS #70886
• html-entities: TypeScript: Converts HtmlEntities Package to TS #69326
• hooks: Migrate hooks package to TypeScript #70488
• i18n: Migrate @wordpress/i18n package to TypeScript and Add TextDomain Type Safety to createI18n #70843
• icons: Migrate Icons package to TypeScript #70456
• is-shallow-equal: TypeScript: migrate is-shallow-equal package to TS #70407
• jest-console: TypeScript: migrate jest-console package to TS #70538
• jest-puppeteer-axe: TypeScript: Migrate packages/jest-puppeteer-axe package to TypeScript #70523
• keycodes: Migrate keycodes package to TypeScript #70466
• lazy-import: Migrate lazy-import package to TypeScript #70475
• plugins: Migrate plugins package to TS #70773
• preferences: preferences: Convert the package to TypeScript #71915
• priority-queue: TypeScript: migrate priority-queue package to TS #70469
• prettier-config: TypeScript: migrate prettier-config package to TS #70533
• redux-routine: Migrate redux-routine package to TS #70686
• shortcode: TypeScript: Migrate shortcode package to TS. #74522
• undo-manager: Migrate undo-manager package to TS #70757
• url: Migrate @packages/url package to TypeScript #70496
• wordcount: TypeScript: Migrate wordcount package to TypeScript #70501
• feature: add TypeScript types to the blocks package #48604
  • Move the @wordpress/blocks types defined in #48604 into own branch. #68213
• TypeScript: Convert redux-store types in data package to TS #67666
• a11y: TypeScript: migrate a11y package to TS  #70680
• annotations: TypeScript: migrate annotations package to TS #70602
• compose: Migrate compose package to TypeScript  #70618
• keyboard-shortcuts: TypeScript: migrate keyboard-shortcuts package to TS #70898
• list-reusable-blocks: TypeScript: Migrate packages/list-reusable-blocks package to TypeScript #70518
• notices: TypeScript: Convert notices package to TypeScript #67670
• project-management-automation: TypeScript: Migrate project-management-automation package #71193
• rich-text: Converts RichText Package to Typescript #69314
• sync: Migrate sync package to TypeScript  #71099
• viewport: TypeScript: Migrate viewport package #71118
• with-select: TypeScript: migrate with-select component in data package to TS #70907