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<h1 class="page-title">Source: checks/trailingWhitespace.js</h1>
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<pre class="prettyprint source linenums"><code>'use strict'
// check for unnecessary tabs or whitespace at eol
var whitespaceRe = /[ \t]+$/
// anything BUT whitespace (we dont want to return false positives on empty lines)
var anythingElseRe = /[^ \t]/
/**
* @description check for trailing whitespace
* @param {string} [line] curr line being linted
* @param {string} [origLine] curr line before being stripped
* @return {boolean} true if whitespace found, false if not
*/
var trailingWhitespace = function( line, origLine ) {
var whitespace = false
var hasWhitespace = whitespaceRe.exec( origLine )
// not an empty line, with whitespace at the end
if ( anythingElseRe.test( origLine ) && hasWhitespace ) {
whitespace = true
}
if ( this.state.conf === 'never' && whitespace ) {
this.msg( 'trailing whitespace', hasWhitespace.index )
}
return whitespace
}
module.exports = trailingWhitespace
</code></pre>
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