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import path from 'path'
import fs from 'fs'
import * as esbuild from 'esbuild'
export function NodeGlobalsPolyfillPlugin({
buffer = false,
// define = {},
process = true,
} = {}): esbuild.Plugin {
return {
name: 'node-globals-polyfill',
setup({ initialOptions, onResolve, onLoad }) {
onResolve({ filter: /_node-buffer-polyfill_\.js/ }, (arg) => {
return {
path: path.resolve(__dirname, '../Buffer.js'),
}
})
onResolve({ filter: /_node-process-polyfill_\.js/ }, (arg) => {
return {
path: path.resolve(__dirname, '../process.js'),
}
})
// TODO esbuild cannot use virtual modules for inject: https://github.com/evanw/esbuild/issues/2762
// onLoad({ filter: /_virtual-process-polyfill_\.js/ }, (arg) => {
// const data = fs
// .readFileSync(path.resolve(__dirname, '../process.js'))
// .toString()
// const keys = Object.keys(define)
// return {
// loader: 'js',
// contents: data.replace(
// `const defines = {}`,
// 'const defines = {\n' +
// keys
// .filter((x) => x.startsWith('process.'))
// .sort((a, b) => a.length - b.length)
// .map(
// (k) =>
// ` ${JSON.stringify(k).replace(
// 'process.',
// '',
// )}: ${define[k]},`,
// )
// .join('\n') +
// '\n}',
// ),
// }
// })
onResolve({ filter: /_virtual-process-polyfill_\.js/ }, () => {
return {
path: path.resolve(__dirname, '../process.js'),
}
})
onResolve({ filter: /_virtual-buffer-polyfill_\.js/ }, () => {
return {
path: path.resolve(__dirname, '../_buffer.js'),
}
})
const polyfills: string[] = []
if (process) {
polyfills.push(
path.resolve(__dirname, '../_virtual-process-polyfill_.js'),
)
}
if (buffer) {
polyfills.push(
path.resolve(__dirname, '../_virtual-buffer-polyfill_.js'),
)
}
if (initialOptions.inject) {
initialOptions.inject.push(...polyfills)
// handle duplicate plugin
initialOptions.inject = [...new Set(initialOptions.inject)]
} else {
initialOptions.inject = [...polyfills]
}
},
}
}
export default NodeGlobalsPolyfillPlugin
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