setflags

Set v8 command line flags at runtime, which would theoretically let you enable harmony features at runtime.

setFlags(args)

Either a string or an array of strings as if you had passed them on the command line to node.

harmonyRequire(module[, args])

Allows you to require a module as if harmony features were enabled, this implies the target module will be loaded in a new context.

• '--harmony_collections'
• '--harmony_modules'
• '--harmony_proxies'
• '--harmony_scoping'
• '--harmony_typeof'

Example

test.js

var sf = require('setflags');
sf.harmonyRequire('./test-harmony');

test-harmony.js

'use strict';
let x = '100';
console.log('x', x);
exports.wm = new WeakMap();

License

MIT