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ESM projects can now import the tree-shakeable ESM code. Node.js doesn't use the "module" field.
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Do you know if this syntax is supported by FE tooling like Webpack 4/5, Rollup, esbuild, parcel etc? |
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It's from Node v12 https://nodejs.org/en/blog/release/v12.7.0 so almost everything should support it by now. Webpack 5 added support in 2020. https://webpack.js.org/blog/2020-10-10-webpack-5-release/ so version 4 didn't have it. Rollup definitely has it. rollup/plugins#208 (comment) Since at least |
This field is ignored by all modern tools when "exports" is present.
now they live next to the files they describe, thanks to rootDir. tsconfig.json seems to be completely ignored and unused here.
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index.ts -> index.mjs, argon2.ts -> argon2.mjs, rather than bundled into one giant file.
es2017 is a superset of es7, which is a superset of es6. So use es2017 consistently for target and lib.
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I haven't tested the above, but I can confirm that the current package cannot be implemented as a module by tools like tsdown. As a workaround, I've had to vendor the |
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"module"is a non-standard field that Node.js doesn't read. It uses"exports".ESM code also needs the
.mjsfile extension.https://nodejs.org/api/packages.html#determining-module-system