little-byte

Compile Node.js code into bytecode.

中文文档 | Chinese Docs

!typescript

Install

``bash
$ npm install --save-dev little-byte
`

Compile App

$3

Create build/index.js

`javascript
const { walker } = require('little-byte').default;
const path = require('path');

walker.start({
inputDir: path.join(__dirname, '../src'),
outputDir: path.join(__dirname, '../dist'),
onFile(fileInfo, defaultAction) {
if (fileInfo.relativePath.startsWith('foobar/')) {
return 'ignore';
}

if (fileInfo.ext === '.jpg') {
return 'ignore';
}

if (fileInfo.name === 'my-dog.txt') {
return 'ignore';
}

if (fileInfo.isScript) {
return 'compile';
} else {
// copy none-js files to dist folder
return 'copy';
}
}
});
`

$3

`bash
$ node build/index.js
`

Run Compiled App

Create app-entry.js

`javascript

require('little-byte');

// now you can require *.bytecode
require('./dist/index');

`

Limitations

$3

The format of bytecode might change over Node.js versions.

$3

It's possible to recover constant strings from bytecode with hex editor.

API

` typescript

littleByte.compiler.compileFile(filePath: string, outputDir?: string): Promise

littleByte.loader.loadBytecode(filePath: string): vm.Script;

littleByte.loader.execByteCode(filePath: string): any;


type WalkAction = 'ignore' | 'compile' | 'copy';

type FileInfo = {
path: string;
relativePath: string;
name: string;
ext: string;
isScript: boolean;
};

interface WalkOptions {
silent?: boolean;
inputDir: string;
outputDir: string;
onFile: (fileinfo: FileInfo, defaultAction: WalkAction) => WalkAction;
}

littleByte.walker.start(options: WalkOptions): Promise;

``

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