0.0.4 • Published 7 years ago
babel-preset-mjs v0.0.4
babel-preset-mjs
Babel preset to transpile JS to restricted mjs JS.
Features
| Restriction | Solution |
|---|---|
| No String, Number, RegExp, Date, Function, etc. | Not solved |
| No try/catch/finally. | Transpiled to functions that make try/catch/finally work. |
| No error classes. | Not solved |
No new or prototypes. In order to create an object with a custom prototype, use Object.create(), which is available. | new is handled by Object.create(), and the constructor is called on the resultant object |
Strict mode only. No for..of, =>, destructors, generators, proxies, promises, classes, template strings. | Handled by babel-preset-es2015 (included by default). |
No var, only let. | All uses of var are changed to let. |
No getters, setters, valueOf. | Not solved |
No == or !=, only === and !==. | All uses of == are transpiled to a manually evaluated loose equals. |
load() is used to load external JS, not very standardized and pollutes the global scope. | Not solved |
No setTimeout() and setInterval() API. | Polyfilled using api_timer.js. |
Usage
.babelrc:
{
"presets": [
"mjs"
]
}License
Licensed under MIT license.
Copyright (C) 2017 Karim Alibhai.