Method addRule

packages/utils/renderer/highlight.js:604–606

(e, n)

							this.regexIndex = 0;
						}
						addRule(e, n) {
							this.rules.push([e, n]), 'begin' === n.type && this.count++;
						}
						exec(e) {
							const n = this.getMatcher(this.regexIndex);
							n.lastIndex = this.lastIndex;