@shopify/jest-dom-mocks/dist/match-media.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
function noop() { }
var MatchMedia = /** @class */ (function () {
    function MatchMedia() {
        this.isUsingMockMatchMedia = false;
    }
    MatchMedia.prototype.mock = function (media) {
        if (media === void 0) { media = defaultMatcher; }
        if (this.isUsingMockMatchMedia) {
            throw new Error('You tried to mock window.matchMedia when it was already mocked.');
        }
        this.originalMatchMedia = window.matchMedia;
        this.isUsingMockMatchMedia = true;
        this.setMedia(media);
    };
    MatchMedia.prototype.restore = function () {
        if (!this.isUsingMockMatchMedia) {
            throw new Error('You tried to restore window.matchMedia when it was already restored.');
        }
        window.matchMedia = this.originalMatchMedia;
        this.isUsingMockMatchMedia = false;
    };
    MatchMedia.prototype.isMocked = function () {
        return this.isUsingMockMatchMedia;
    };
    MatchMedia.prototype.setMedia = function (media) {
        if (media === void 0) { media = defaultMatcher; }
        this.ensureMatchMediaIsMocked();
        window.matchMedia = function (query) { return mediaQueryList(media(query)); };
    };
    MatchMedia.prototype.ensureMatchMediaIsMocked = function () {
        if (!this.isUsingMockMatchMedia) {
            throw new Error('You must call matchMedia.mock() before interacting with the mock matchMedia.');
        }
    };
    return MatchMedia;
}());
exports.default = MatchMedia;
function defaultMatcher() {
    return {
        media: '',
        addListener: noop,
        addEventListener: noop,
        removeListener: noop,
        removeEventListener: noop,
        onchange: noop,
        dispatchEvent: function () { return false; },
        matches: false,
    };
}
function mediaQueryList(values) {
    // Explictly state a return type as TypeScript does not attempt to shrink the
    // type when using Object spread. Without the explicit return type TypeScript
    // exports a type that exposes the internals of `MediaQueryList` (which
    // changed in TS 3.1.0).
    // This ensures that this function can be used in projects that use any
    // version of Typescript instead of only <3.1.0 or >= 3.1.0 depending on the
    // version that this library was compiled using.
    return tslib_1.__assign({}, defaultMatcher(), values);
}
exports.mediaQueryList = mediaQueryList;