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tsup.config.ts
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tsup.config.ts
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import { readFile, writeFile } from 'node:fs/promises';
import { resolve } from 'node:path';
import { Options, defineConfig } from 'tsup';
const sharedConfig: Options = {
entry: ['src/index.ts'],
external: [],
noExternal: [],
platform: 'neutral',
target: 'es2020',
skipNodeModulesBundle: true,
clean: true,
shims: true,
cjsInterop: true,
minify: false,
terserOptions: {
mangle: false,
keep_classnames: true,
keep_fnames: true,
},
splitting: false,
keepNames: true,
dts: true,
sourcemap: true,
treeshake: false,
outDir: 'dist',
globalName: 'AsyncEventEmitter',
plugins: [
{
name: 'add-unhandled-error-comments',
async buildEnd(ctx) {
for (const file of ctx.writtenFiles) {
const { name } = file;
if (!/\.m?js$/.test(name)) {
continue;
}
const content = await readFile(resolve(process.cwd(), file.name), 'utf-8');
const newContent = content.replace(/(?:throw (err?);)/g, (_, err) => {
return `throw ${err}; // Unhandled 'error' event`;
});
await writeFile(resolve(process.cwd(), file.name), newContent, 'utf-8');
}
},
},
],
};
export default [
defineConfig({
...sharedConfig,
format: 'cjs',
outExtension: () => ({ js: '.cjs' }),
}),
defineConfig({
...sharedConfig,
format: 'esm',
}),
defineConfig({
...sharedConfig,
format: 'iife',
}),
];