A fast JavaScript pretty printer.
npm install pretty-fastPretty Fast is a source-map-generating JavaScript pretty printer, that is pretty
fast.
npm install pretty-fast
var prettyFast = require("pretty-fast");
var uglyJS = "function ugly(){code()}";
var pretty = prettyFast(uglyJS, {
url: "test.js",
indent: " "
});
console.log(pretty.code);
// function ugly() {
// code()
// }
console.log(pretty.map);
// [object SourceMapGenerator]
(See the [mozilla/source-map][0] library for information on SourceMapGenerator
instances, and source maps in general.)
[0]: https://github.com/mozilla/source-map
* url - The URL of the JavaScript source being prettified. Used in the
generated source map. If you are prettifying JS that isn't from a file or
doesn't have a URL, you can use a dummy value, such as "(anonymous)".
* indent - The string that you want your code indented by. Most people want
one of " ", " ", or "\t".
* ecmaVersion - Indicates the ECMAScript version to parse.
See acorn.parse documentation for more details. Defaults to "latest".
* To be pretty fast, while still generating source maps.
* To avoid fully parsing the source text; we should be able to get away with
only a tokenizer and some heuristics.
* Preserve comments.
* Pretty Fast should be able to run inside Web Workers.
* Extreme configurability of types of indentation, where curly braces go, etc.
* To be the very fastest pretty printer in the universe. This goal is
unattainable given that generating source maps is a requirement. We just need
to be Pretty Fast.
To perfectly pretty print exactly* as you would have written the code. This
falls out from both not wanting to support extreme configurability, and
avoiding full on parsing. We just aim to pretty print Pretty Well.