js-code-start
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Find js code start point, skip any whitespace and comments
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# js-code-start
Find js code start point, skip any whitespace and comments.
[](https://travis-ci.org/futurist/js-code-start)
[](https://www.npmjs.com/package/js-code-start)
When you want to place some code at beginning of JS file, you don't want to messup `"use strict"` block, so this module help find the first real code beginning, thus skip any whitespace, comments, and `"use strict"` block.
## Usage
```js
const findStart = require('js-code-start')
var code = `
// line comment
// line comment
/*
Block comment
*/
'use strict';
console.log('code start');
`
console.log(findStart(code))
```
The result is
```
{ start: 67,
line: 8,
col: 13,
strict: true,
ast:
[ { type: 1, start: 0, end: 0 },
{ type: 2, start: 1, end: 16 },
{ type: 2, start: 17, end: 32 },
{ type: 3, start: 33, end: 51 },
{ type: 1, start: 52, end: 53 },
{ type: 4, start: 54, end: 66 } ] }
```
And the js code start point is `67`(after first `;` char), in `strict mode`.
# Note
The line number start from 1,
but the column number start from 0,
this is follow the Emacs convention.