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oxc/crates/oxc_minifier
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Boshen 267f7c4398
fix(minifier): skip Object.defineProperty(exports, ...) for cjs-module-lexer (#4409) 
```
> monitor-oxc@ test /home/runner/work/monitor-oxc/monitor-oxc
> node src/main.test.mjs

file:///home/runner/work/monitor-oxc/monitor-oxc/node_modules/.pnpm/inquirer@[10](https://github.com/oxc-project/monitor-oxc/actions/runs/10038139357/job/27739464680#step:8:11).0.1/node_modules/inquirer/dist/esm/ui/prompt.mjs:2
import { defer, EMPTY, from, of, concatMap, filter, reduce, isObservable, lastValueFrom } from "rxjs";
                ^^^^^
SyntaxError: Named export 'EMPTY' not found. The requested module 'rxjs' is a CommonJS module, which may not support all module.exports as named exports.
CommonJS modules can always be imported via the default export, for example using:

import pkg from 'rxjs';
const { defer, EMPTY, from, of, concatMap, filter, reduce, isObservable, lastValueFrom } = pkg;

    at ModuleJob._instantiate (node:internal/modules/esm/module_job:134:21)
    at async ModuleJob.run (node:internal/modules/esm/module_job:217:5)
    at async ModuleLoader.import (node:internal/modules/esm/loader:316:24)
    at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:[12](https://github.com/oxc-project/monitor-oxc/actions/runs/10038139357/job/27739464680#step:8:13)3:5)

Node.js v20.15.1
```

Export is undefined when `enumerable` is "!0".
See `https://github.com/nodejs/cjs-module-lexer/issues/64`
2024-07-22 20:32:15 +08:00
..
examples chore: move mangler example to minifier (#4343) 2024-07-18 06:27:16 +00:00
src fix(minifier): skip Object.defineProperty(exports, ...) for cjs-module-lexer (#4409) 2024-07-22 20:32:15 +08:00
tests fix(minifier): skip Object.defineProperty(exports, ...) for cjs-module-lexer (#4409) 2024-07-22 20:32:15 +08:00
Cargo.toml Release crates v0.21.0 (#4344) 2024-07-18 14:39:07 +08:00
CHANGELOG.md Release crates v0.21.0 (#4344) 2024-07-18 14:39:07 +08:00
README.md

README.md

Minifier

A JavaScript minifier has three components:

  1. printer
  2. mangler
  3. compressor

Mangler

The mangler implementation is part of the SymbolTable residing in oxc_semantic. It is responsible for shortening variables. Its algorithm should be gzip friendly.

The printer is also responsible for printing out the shortened variable names.

Compressor

The compressor is responsible for rewriting statements and expressions for minimal text output. Terser is a good place to start for learning the fundamentals.

Terser Tests

The fixtures are copied from https://github.com/terser/terser/tree/master/test/compress