mock-match-media/dist/index.mjs.map

mock window.matchMedia for tests or node

{"version":3,"file":"index.mjs","sources":["../src/index.ts"],"sourcesContent":["import { match, parse, Feature, Query, MediaState } from \"css-mediaquery\";\n\nlet state: MediaState = {};\n\nconst now = Date.now();\n\n// Event was added in node 15, so until we drop the support for versions before it, we need to use this\nclass EventLegacy {\n    type: \"change\";\n    timeStamp: number;\n\n    bubbles = false;\n    cancelBubble = false;\n    cancelable = false;\n    composed = false;\n    target = null;\n    currentTarget = null;\n    defaultPrevented = false;\n    eventPhase = 0;\n    isTrusted = false;\n    initEvent = () => {};\n    composedPath = () => [];\n    preventDefault = () => {};\n    stopImmediatePropagation = () => {};\n    stopPropagation = () => {};\n    returnValue = true;\n    srcElement = null;\n    // See https://developer.mozilla.org/en-US/docs/Web/API/Event/eventPhase\n    NONE = 0;\n    CAPTURING_PHASE = 1;\n    AT_TARGET = 2;\n    BUBBLING_PHASE = 3;\n    constructor(type: \"change\") {\n        this.type = type;\n        this.timeStamp = Date.now() - now; // See https://developer.mozilla.org/en-US/docs/Web/API/Event/timeStamp#value\n    }\n}\n\n// @ts-expect-error\nconst EventCompat: typeof Event = typeof Event === \"undefined\" ? 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callback is already listed in the list of callback to call, but not as a `once`,\n                // it means that it was added without the flag and thus shouldn’t be treated as such.\n                if (isAlreadyListed && !onces.has(callback)) {\n                    return;\n                }\n\n                // Otherwise, use the `once` flag\n                onces.add(callback);\n            }\n        },\n        removeEventListener: (event, callback) => {\n            if (event === \"change\") removeListener(callback);\n        },\n        dispatchEvent: (event: MediaQueryListEvent) => {\n            if (!event) {\n                throw new TypeError(\n                    `Failed to execute 'dispatchEvent' on 'EventTarget': 1 argument required, but only 0 present.`,\n                );\n            }\n            if (!(event instanceof EventCompat)) {\n                throw new TypeError(\n                    `Failed to execute 'dispatchEvent' on 'EventTarget': parameter 1 is not of type 'Event'.`,\n                );\n            }\n            if (event.type !== \"change\") {\n                return true;\n            }\n            mql.onchange?.(event);\n            callbacks.forEach((callback) => {\n                callback(event);\n                if (onces.has(callback)) {\n                    removeListener(callback);\n                }\n            });\n            // TODO: target and currentTarget\n            // Object.defineProperty(event, \"target\", { value: mql });\n            return true;\n        },\n        addListener: (callback) => {\n            if (!callback) return;\n            callbacks.add(callback);\n        },\n        removeListener: (callback) => {\n            if (!callback) return;\n            removeListener(callback);\n        },\n    };\n\n    MQLs.set(mql, {\n        previousMatched,\n        clear,\n        features: getFeaturesFromQuery(queryTyped),\n    });\n\n    return mql;\n};\n\nexport class MediaQueryListEvent extends EventCompat {\n    readonly media: string;\n    readonly matches: boolean;\n    constructor(\n        type: \"change\",\n        options: {\n            media?: string;\n            matches?: boolean;\n        } = {},\n    ) {\n        super(type);\n        this.media = options.media || \"\";\n        this.matches = options.matches || false;\n    }\n}\n\n// Cannot use MediaState here as setMedia is exposed in the API\nexport const setMedia = (media: Record<string, string>) => {\n    const changedFeatures = new Set<Feature>();\n    Object.keys(media).forEach((feature) => {\n        changedFeatures.add(feature as Feature);\n        state[feature] = media[feature];\n    });\n    for (const [MQL, cache] of MQLs) {\n        let found = false;\n        for (const feature of cache.features) {\n            if (changedFeatures.has(feature)) {\n                found = true;\n                break;\n            }\n        }\n        if (!found) {\n            continue;\n        }\n        const matches = match(MQL.media as Query, state);\n        if (matches === cache.previousMatched) {\n            continue;\n        }\n        cache.previousMatched = matches;\n        MQL.dispatchEvent(new MediaQueryListEvent(\"change\", { matches, media: MQL.media }));\n    }\n};\n\nexport const cleanupListeners = () => {\n    for (const { clear } of MQLs.values()) {\n        clear();\n    }\n    MQLs.clear();\n};\n\nexport const cleanupMedia = () => {\n    state = {};\n};\n\nexport const cleanup = () => {\n    cleanupListeners();\n    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