string.prototype.padstart

ES2017 spec-compliant String.prototype.padStart shim.

Usage no npm install needed!

<script type="module">
  import stringPrototypePadstart from 'https://cdn.skypack.dev/string.prototype.padstart';
</script>

README

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An ES2017 spec-compliant String.prototype.padStart shim. Invoke its "shim" method to shim String.prototype.padStart 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 padStart = require('string.prototype.padstart');

assert(padStart('foo', 5, 'bar') === 'bafoo');

padStart.shim();

assert(padStart('foo', 2) === 'foo'.padStart(2));

Tests

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