generated from polymech/site-template
51 lines
1.2 KiB
JavaScript
51 lines
1.2 KiB
JavaScript
// @ts-check
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import fs from "node:fs";
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import crypto from "node:crypto";
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import { join, parse, relative } from "node:path";
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import throwErrorIfUnsupported from "./throwErrorIfUnsupported.js";
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import {
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cwd,
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fsCachePath,
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supportedImageTypes,
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} from "../../utils/runtimeChecks.js";
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const { fileTypeFromBuffer } = await import("file-type");
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export default async function getResolvedSrc(src) {
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const token = crypto.createHash("md5").update(src).digest("hex");
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let filepath = fsCachePath + token;
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const fileExists = (() => {
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for (const type of supportedImageTypes) {
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const fileExists = fs.existsSync(filepath + `.${type}`);
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if (fileExists) {
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filepath += `.${type}`;
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return true;
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}
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}
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})();
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if (!fileExists) {
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const buffer = Buffer.from(await (await fetch(src)).arrayBuffer());
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const { ext } = (await fileTypeFromBuffer(buffer)) || {};
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throwErrorIfUnsupported(src, ext);
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filepath += `.${ext}`;
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fs.writeFileSync(filepath, buffer);
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}
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const base = /^https?:/.test(src)
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? parse(new URL(src).pathname).name
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: undefined;
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src = join("/", relative(cwd, filepath));
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return { src, base };
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}
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