42 lines
1 KiB
JavaScript
42 lines
1 KiB
JavaScript
module.exports = function () {
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var unknowMIMEType = "application/octet-stream";
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var mimeTypes = new Map([
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["txt", "text/plain"],
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["htm", "text/html"],
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["html", "text/html"],
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["xml", "text/xml"],
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["css", "text/css"],
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["js", "application/javascript"],
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["json", "application/json"],
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["mp3", "audio/mpeg"],
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["wav", "audio/wav"],
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["gif", "image/gif"],
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["jpg", "image/jpeg"],
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["jpeg", "image/jpeg"],
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["png", "image/png"],
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["bmp", "image/bmp"],
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["svg", "image/svg+xml"],
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["avi", "video/avi"],
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["mp4", "video/mpeg"],
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]);
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return function (ext) {
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if (!ext || typeof ext !== "string") {
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return unknowMIMEType;
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}
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if (/^\./.test(ext)) {
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ext = ext.slice(1);
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}
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ext = ext.toLowerCase();
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if (mimeTypes.has(ext)) {
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return mimeTypes.get(ext);
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} else {
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return unknowMIMEType;
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}
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};
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};
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