earljs/dist/validators/toBeA.js

Ergonomic, modern and type-safe assertion library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.toBeA = void 0;
const format_1 = require("../format");
const matchers_1 = require("../matchers");
function toBeA(control, clazz) {
    const m = new matchers_1.AMatcher(clazz);
    const actualFmt = (0, format_1.formatCompact)(control.actual);
    const expectedFmt = formatExpectedType(clazz);
    control.assert({
        success: m.check(control.actual),
        reason: `${actualFmt} is not ${expectedFmt}`,
        negatedReason: `${actualFmt} is ${expectedFmt}`,
    });
}
exports.toBeA = toBeA;
function formatExpectedType(clazz) {
    if (clazz === String) {
        return 'a string';
    }
    else if (clazz === Boolean) {
        return 'a boolean';
    }
    else if (clazz === Number) {
        return 'a number';
    }
    else if (clazz === BigInt) {
        return 'a bigint';
    }
    else if (clazz === Array) {
        return 'an array';
    }
    else if (clazz === Function) {
        return 'a function';
    }
    else if (clazz === Object) {
        return 'an object';
    }
    else if (clazz === Symbol) {
        return 'a symbol';
    }
    else {
        return `an instance of ${(0, format_1.formatCompact)(clazz)}`;
    }
}