imranbarbhuiya
# esbuild-plugins-node-modules-polyfill
Polyfills nodejs builtin modules for the browser.
Description
Polyfills nodejs builtin modules and globals for the browser.
Features
- Written In Typescript
- Offers CJS and ESM builds
- Full TypeScript & JavaScript support
- Supports
node:protocol - Supports
browserfield inpackage.json - Optionally injects globals
- Optionally provides empty fallbacks
Install
npm install --save-dev esbuild-plugins-node-modules-polyfill
Usage
import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
import { build } from 'esbuild';
build({
plugins: [nodeModulesPolyfillPlugin()],
});
Inject globals when detected:
import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
import { build } from 'esbuild';
build({
plugins: [
nodeModulesPolyfillPlugin({
globals: {
process: true,
Buffer: true,
},
}),
],
});
[!Note] If you are utilizing the
modulesoption, ensure that you include polyfills for the global modules you are using.
Configure which modules to polyfill:
import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
import { build } from 'esbuild';
build({
plugins: [
nodeModulesPolyfillPlugin({
modules: ['crypto'],
}),
],
});
import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
import { build } from 'esbuild';
build({
plugins: [
nodeModulesPolyfillPlugin({
modules: {
crypto: true,
fs: false,
},
}),
],
});
Provide empty polyfills:
Provide empty polyfills for specific modules:
import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
import { build } from 'esbuild';
build({
plugins: [
nodeModulesPolyfillPlugin({
modules: {
fs: 'empty',
crypto: true,
},
}),
],
});
Provide empty fallbacks for any unpolyfilled modules:
import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
import { build } from 'esbuild';
build({
plugins: [
nodeModulesPolyfillPlugin({
fallback: 'empty',
}),
],
});
Provide empty fallbacks for any unconfigured modules:
import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
import { build } from 'esbuild';
build({
plugins: [
nodeModulesPolyfillPlugin({
fallback: 'empty',
modules: {
crypto: true,
},
}),
],
});
Fail the build when certain modules are used:
[!Important] The
writeoption inesbuildmust befalseto support this.
import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
import { build } from 'esbuild';
const buildResult = await build({
write: false,
plugins: [
nodeModulesPolyfillPlugin({
modules: {
crypto: 'error',
path: true,
},
}),
],
});
Fail the build when a module is not polyfilled or configured:
[!Important] The
writeoption inesbuildmust befalseto support this.
import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
import { build } from 'esbuild';
const buildResult = await build({
write: false,
plugins: [
nodeModulesPolyfillPlugin({
fallback: 'error',
modules: {
path: true,
},
}),
],
});
Provide a custom error formatter when a module is not polyfilled or configured:
Return an esbuild PartialMessage object from the formatError function to override any properties of the default error message.
[!Important] The
writeoption inesbuildmust befalseto support this.
import { nodeModulesPolyfillPlugin } from 'esbuild-plugins-node-modules-polyfill';
import { build } from 'esbuild';
const buildResult = await build({
write: false,
plugins: [
nodeModulesPolyfillPlugin({
fallback: 'error',
modules: {
path: true,
},
formatError({ moduleName, importer, polyfillExists }) {
return {
text: polyfillExists
? `Polyfill has not been configured for "${moduleName}", imported by "${importer}"`
: `Polyfill does not exist for "${moduleName}", imported by "${importer}"`,
};
},
}),
],
});
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Contributors ✨
Thanks goes to these wonderful people: