esbuild-plugin-es5
Advanced tools
Use the @swc/core transform to convert to ES5 for the esbuild plugin.
Use the @swc/core transform to convert to ES5 for the esbuild plugin.
esbuild does not support exporting in ES5 mode, so when our code needs to run on older devices, it must be converted to ES5. This plugin uses @swc/core to convert non-ES5 syntax to ES5 before bundling.
The swc conversion is introduced, the conversion steps are added, and the construction time is increased to a certain extent.
| Project | esbuild | esbuild + es5Plugin |
|---|---|---|
| three.js | 50ms | 180ms |
For a test example you can clone the current project and run
make demo-three-esbuildandmake demo-three-esbuild-es5for comparison.
npm install esbuild-plugin-es5 @swc/helpers -D
import { es5Plugin } from 'esbuild-plugin-es5';
import path from 'path';
await esbuild.build({
entryPoints: ['src/index.ts'],
bundle: true,
outfile: 'dist/index.js',
plugins: [es5Plugin()], // # 1. Use esbuild-plugin-es5
target: ['es5'], // # 2. Set the target to es5
alias: {
// # 3. Set the alias to @swc/helpers
'@swc/helpers': path.dirname(require.resolve('@swc/helpers/package.json')),
}
});
For a faster development experience, you can only use it in production mode.
const es5Plugin= (options: { filter?: RegExp; swc?: SWCOptions }) => Es5Plugin
SWC Options : https://swc.rs/docs/configuration/compilation
FAQs
Use the @swc/core transform to convert to ES5 for the esbuild plugin.
The npm package esbuild-plugin-es5 receives a total of 30,048 weekly downloads. As such, esbuild-plugin-es5 popularity was classified as popular.
We found that esbuild-plugin-es5 demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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