47 lines
1.4 KiB
JavaScript
47 lines
1.4 KiB
JavaScript
// @ts-check
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/**
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* @typedef {object} MimeSniffPattern
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* @prop {ArrayLike<number>} bytes The byte pattern to use for MIME sniffing, lifted from the "MIME Sniffing" spec.
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* @prop {ArrayLike<number>} mask The pattern mask to use for MIME sniffing, lifted from the "MIME Sniffing" spec.
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*/
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/**
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* @typedef {object} SupportedFileType
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* @prop {string} name The English name of a file type.
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* @prop {string[]} extensions File extension for this type, with the leading dot.
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* @prop {string} mimeType MIME type for this file type.
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* @prop {string} route The route to the file type's page.
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* @prop {MimeSniffPattern[]} mimeSniffPatterns MIME sniffing patterns.
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*/
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/** @type {SupportedFileType[]} */
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export const SUPPORTED_FILE_TYPES = [
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{
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name: "GIF",
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extensions: [".gif", "image/gif"],
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mimeType: "image/gif",
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route: "/gif",
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mimeSniffPatterns: [
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{
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bytes: [0x47, 0x49, 0x46, 0x38, 0x37, 0x61],
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mask: [0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF],
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},
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{
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bytes: [0x47, 0x49, 0x46, 0x38, 0x39, 0x61],
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mask: [0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF],
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},
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],
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},
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{
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name: "PNG",
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extensions: [".png", ".apng"],
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mimeType: "image/png",
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route: "/png",
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mimeSniffPatterns: [{
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bytes: [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A],
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mask: [0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF],
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}],
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},
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];
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