ts-regex-builder/dist/commonjs/constructs/choice-of.js

Maintainable regular expressions for TypeScript and JavaScript.

"use strict";

exports.choiceOf = choiceOf;
var _encoder = require("../encoder.js");
function choiceOf(...alternatives) {
  if (alternatives.length === 0) {
    throw new Error('Expected at least one alternative');
  }
  const encodedAlternatives = alternatives.map(c => (0, _encoder.encode)(c));
  if (encodedAlternatives.length === 1) {
    return encodedAlternatives[0];
  }
  return {
    precedence: 'disjunction',
    pattern: encodedAlternatives.map(n => n.pattern).join('|')
  };
}
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