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ES5 spec-compliant shim for String.prototype.trim
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README.md

String.prototype.trim Version Badge

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An ES5 spec-compliant String.prototype.trim shim. Invoke its "shim" method to shim String.prototype.trim if it is unavailable.

This package implements the es-shim API interface. It works in an ES3-supported environment and complies with the spec.

Most common usage:

var assert = require('assert');
var trim = require('string.prototype.trim');

assert(trim(' \t\na \t\n') === 'a');

trim.shim(); // will be a no-op if not needed

assert(trim(' \t\na \t\n') === ' \t\na \t\n'.trim());

Engine Bugs

Some implementations of String#trim incorrectly trim zero-width spaces. This shim detects and corrects this behavior.

Tests

Simply clone the repo, npm install, and run npm test

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