json-eval

json-eval

This function is a drop-in replacement for eval() used for the purpose of parsing JSON-like strings into valid JS objects. However, it does not actually run eval(), thereby averting the damage that executing insecure code can cause. It first attempts to parse the string with JSON5, so in most cases, it is a drop-in replacement for JSON5.parse().

The recommended syntax for the submitted string is that it be valid JSON5. However, this function was expressly created to parse the quoting and special character escaping scheme employed by Pattern Lab PHP. When encountering that syntax, it will traverse the submitted string and wrap the keys and values in double-quotes as necessary.

Use

CLI:

npm install json-eval

Node.js:

const jsonEval = require('json-eval');
const jsObject = jsonEval(jsonLikeString);

Browser (ES5):

<script src="json-eval/dist/json-eval.min.js"></script>
<script>
  var jsonEval = window.jsonEval;
  var jsObject = jsonEval(jsonLikeString);
</script>

Browser (ES6):

<script type="module">
  import jsonEval from 'json-eval/dist/json-eval.es6.min.js';
  const jsObject = jsonEval(jsonLikeString);
</script>