@nfrasser/simple-html-tokenizer/src/linkify-html-tokenizer/entity-parser.js

Simple HTML Tokenizer is a lightweight JavaScript library that can be used to tokenize the kind of HTML normally found in templates.

var HEXCHARCODE = /^#[xX]([A-Fa-f0-9]+)$/;
var CHARCODE = /^#([0-9]+)$/;
var NAMED = /^([A-Za-z0-9]+)$/;
var EntityParser = (function () {
    function EntityParser(named) {
        this.named = named;
    }
    EntityParser.prototype.parse = function (entity) {
        if (!entity) {
            return;
        }
        var matches = entity.match(HEXCHARCODE);
        if (matches) {
            return "&#x" + matches[1] + ";";
        }
        matches = entity.match(CHARCODE);
        if (matches) {
            return "&#" + matches[1] + ";";
        }
        matches = entity.match(NAMED);
        if (matches) {
            return this.named[matches[1]] || "&" + matches[1] + ";";
        }
    };
    return EntityParser;
}());
export default EntityParser;
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