beater-matcher/lib/matcher.js

A matcher library for beater.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.match = exports.defineMatcher = void 0;

var _helper = require("./helper");

const match = (value, matcher) => {
  switch (typeof matcher) {
    case "bigint":
      return matcher === value;

    case "boolean":
      return matcher === value;

    case "function":
      return isMatcherFn(matcher) ? matcher.call(null, value) : matcher === value;

    case "number":
      return matcher === value;

    case "object":
      if (matcher === null) {
        return matcher === value;
      } else if (Array.isArray(matcher)) {
        return Array.isArray(value) && matcher.every((m, i) => match(value[i], m));
      } else {
        return (0, _helper.isObject)(value) && Object.entries(matcher).every(([k, v]) => match(value[k], v));
      }

    case "undefined":
      return matcher === value;

    case "string":
      return matcher === value;

    case "symbol":
      return matcher === value;

    default:
      throw new Error(`unknown matcher type '${typeof matcher}'`);
  }
};

exports.match = match;

const isMatcherFn = f => f.__matcher__ === true;

const defineMatcher = f => {
  Object.defineProperty(f, "__matcher__", {
    value: true
  });
  return f;
};

exports.defineMatcher = defineMatcher;