remove-use-strict 

This node module remove unnecessary "use strict"; literal.

$3

> A Use Strict Directive is an ExpressionStatement in a Directive Prologue whose StringLiteral is either the exact character sequences "use strict" or 'use strict'. A Use Strict Directive may not contain an EscapeSequence or LineContinuation.

> A Directive Prologue is the longest sequence of ExpressionStatement productions occurring as the initial SourceElement productions of a Program or FunctionBody and where each ExpressionStatement in the sequence consists entirely of a StringLiteral token followed a semicolon. The semicolon may appear explicitly or may be inserted by automatic semicolon insertion. A Directive Prologue may be an empty sequence.

via ECMAScript Language Specification - ECMA-262 Edition 5.1

and "use strict" - blog.niw.at

This module remove "use strict"; which isn't delective prologue.

(also has force option)

Installation

`` sh
npm install remove-use-strict
`

$3

* azu/gulp-remove-use-strict

Usage

` js
var removeUst = require("../lib/remove-use-strict");
var code = 'var a = 1;\n' +
'"use strict";\n"use strict";';// unnecessary use strict...
removeUst(code); // => 'var a = 1;'
`

force option : true

` js
var code = '"use strict";\n' +
'function a(){ "use strict"; \n var a = "use strict"; }';
removeUst(code, {
force : true
}) // => 'function a(){ var a = "use strict"; }'
`

Contributing

1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add some feature'
4. Push to the branch: git push origin my-new-feature`
5. Submit a pull request :D

License

MIT