[v3] Various JS/CS CJS/ESM updates#2066
Merged
Merged
Conversation
364a170 to
ab795ed
Compare
Convert all server-side code (cli/, auspice.js, index.js, src/version.js) and the test file from CommonJS require/module.exports syntax to ES module import/export syntax. This also addresses the downstream effects on webpack bundling for the frontend code in src/. package.json: Added "type": "module" to declare the package as ESM. This makes Node treat all .js files as ES modules by default. Replaced the "main" field with "exports" to use the modern package entry point specification. Added babel-plugin-transform-import-meta as a dev dependency for Jest compatibility. Server code (cli/, auspice.js, index.js, src/version.js): Converted all require() calls to import statements and all module.exports/exports assignments to named or default exports. For packages that use CommonJS internally (argparse, webpack config), createRequire(import.meta.url) is used to obtain a require function that can load CJS modules from an ESM context. __dirname shim: Since __dirname is not available in ES modules, files that reference it (cli/utils.js, cli/build.js, cli/develop.js, cli/view.js) now derive it via path.dirname(fileURLToPath(import.meta.url)). The test file also uses this pattern. Dynamic require(handlersPath) in cli/view.js: The user-provided custom handlers path was previously loaded with require(). This is now await import(handlersPath), which required making customRouteHandlers() and run() async functions. Config file renames: webpack.config.js and babel.config.js are renamed to .cjs since they use CommonJS syntax (module.exports) and would otherwise be treated as ESM due to the package-level "type": "module" setting. Babel transform for Jest: Jest runs tests through babel-jest which transforms ESM to CJS. However, babel leaves import.meta.url untouched, causing a runtime error when Jest executes the transformed code. Added babel-plugin-transform-import-meta (test env only) to convert import.meta.url to its CJS equivalent during testing. The test/server-fetch.test.js file itself was also converted to ESM syntax. webpack.config.cjs updates: Added resolve.fullySpecified: false (both top-level and as a per-module rule) to allow extensionless imports in the bundled frontend code -- without this, webpack enforces mandatory file extensions for all imports in "type": "module" packages. The JS/TS rule also sets type: "javascript/auto" so webpack parses source files in mixed mode, recognizing both require() and import syntax. module.hot to import.meta.webpackHot: In src/root.js and src/store.ts, the webpack HMR API was accessed via module.hot which is a CJS-only global. Replaced with import.meta.webpackHot, the ESM equivalent. The HMR accept callback in store.ts now uses dynamic import() instead of require() to reload reducers. Frontend require() calls for assets: Several React components used require() to load images (SVG, PNG, JPG). These are converted to static import statements at the top of each file, which webpack asset/resource loader handles identically. Affected files: navBar/content.js, splash/splash.js, framework/fine-print.js, framework/footer-descriptions.js, info/byline.js. Dynamic extension loading (src/util/extensions.ts): The extensions.ts file retains its synchronous require(`@extensions/...`) pattern. This works because webpack's javascript/auto parser mode (set via the module rule) handles require() at build time even in a "type": "module" package. An earlier approach using top-level await with dynamic import() caused async module semantics to cascade through the dependency graph (via util/globals.js), which broke component rendering by wrapping module exports in async module namespace objects. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Convert 8 cli files from .js to .ts, leveraging Node 24's native type stripping to run them directly without a build step. tsc is used for type-checking only (noEmit). Files converted: - cli/utils.ts - cli/server/getDataset.ts - cli/server/getDatasetHelpers.ts - cli/server/getAvailable.ts - cli/server/getNarrative.ts - cli/server/processPaths.ts - cli/view.ts - cli/develop.ts - cli/build.ts Supporting changes: - Add cli/tsconfig.json extending root with nodenext module resolution and allowImportingTsExtensions for Node-native .ts imports - Add allowImportingTsExtensions to root tsconfig.json (needed because cli .ts files are pulled in transitively via test imports) - Exclude cli/**/* from root tsconfig include/add to exclude (prevents checking cli files under the wrong moduleResolution) - Update package.json type-check script to run both tsconfigs - Update all import paths across 11 files (.js -> .ts extensions) - Update webpack.config.cjs require for cli/utils.ts - Add eslint-disable for explicit-function-return-type and consistent-type-assertions in converted files (incremental migration) - Apply chalk 2.x workaround (type assertion) for nodenext compat - Fix TypeScript strict errors: unknown in catch blocks, Object.entries casting for Set methods, undefined-in-object check Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The docs and code had fallen out of sync over the years.
* `parseNarrativeFile` was not only deprecated as the docs indicated
("This function is deprecated as of vXXX"), it no longer existed in the codebase.
* The docs for the getNarrative route incorrectly indicated the `type` query as optional
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Triggered by existing warnings: WARNING: You are currently running a version of TypeScript which is not officially supported by @typescript-eslint/typescript-estree.
Errors were new since version bump in parent commit
This is an old and now unused test that's been fully superseded by the Playwright smoke tests. It was the only test that used "chai" (and "mocha", although that wasn't listed as a dep). I only noticed this as the eslint version bump flagged up an error in the test file
(This was from an ancient method of deploying auspice)
034d246 to
649c636
Compare
ab795ed to
fbc6283
Compare
jameshadfield
added a commit
that referenced
this pull request
Jul 10, 2026
[v3] Various JS/CS CJS/ESM updates
jameshadfield
added a commit
that referenced
this pull request
Jul 13, 2026
[v3] Various JS/CS CJS/ESM updates
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
See commit messages for details. All are changes I've wanted to implement for a while but have let slide for more pressing work, but the upcoming v3 release is a great reason to get them done.