stdin not supports onLoad && onResolve plugin

[hardfist]

It seems that stdin contents isn't handled by onLoad && onResolve plugin, and it seems doesn't support namespace too

[zaydek]

@hardfist I’d recommend adding some reproducible code snippets -- whatever you tried for example.

[hardfist]

if i pass entry throungh entrypoints, load and resolve plugin are called, but when i pass entry through stdin load and resolve plugins are not called

 const result = await build({
    // entryPoints: [path.join(__dirname, 'src/index.js')],  // resolve and load plugin are called
    stdin: { // resolve and load plugin are not called
      contents: 'export default 42',
      loader: 'js',
      resolveDir: '',
      sourcefile: 'test.js',
    },
    bundle: true,
    format: 'esm',
    splitting: true,
    outdir: 'dist',
    write: false,
    plugins: [
      {
        name: 'esbuild',
        setup(build) {
          build.onResolve({ filter: /.*/ }, (args) => {
            console.log('load args:', args);
          });
          build.onLoad({ filter: /.*/ }, (args) => {
            console.log('resolve args2:', args);
          });
        },
      },
    ],
  });

src/index.js

export default 42

[evanw]

If I'm understanding your issue correctly, this is by design. The stdin API is a convenience API and has limited features. If you need the behavior I think you're asking for, you should be able to implement it yourself:

const result = await build({
  entryPoints: ['<stdin>'],
  bundle: true,
  format: 'esm',
  splitting: true,
  outdir: 'dist',
  write: false,
  plugins: [
    {
      name: 'esbuild',
      setup(build) {
        build.onResolve({ filter: /^<stdin>$/ }, (args) => {
          return { path: 'test.js', namespace: 'stdin' };
        });
        build.onLoad({ filter: /.*/, namespace: 'stdin' }, (args) => {
          return { contents: 'export default 42', loader: 'js' };
        });
      },
    },
  ],
});

[hardfist]

If I'm understanding your issue correctly, this is by design. The stdin API is a convenience API and has limited features. If you need the behavior I think you're asking for, you should be able to implement it yourself:

const result = await build({
  entryPoints: ['<stdin>'],
  bundle: true,
  format: 'esm',
  splitting: true,
  outdir: 'dist',
  write: false,
  plugins: [
    {
      name: 'esbuild',
      setup(build) {
        build.onResolve({ filter: /^<stdin>$/ }, (args) => {
          return { path: 'test.js', namespace: 'stdin' };
        });
        build.onLoad({ filter: /.*/, namespace: 'stdin' }, (args) => {
          return { contents: 'export default 42', loader: 'js' };
        });
      },
    },
  ],
});

yes, It works , but kind of awkard, If it's by design, then I think it's ok。

[evanw]

Closing since this is by design, and there is a workaround.