68 lines
1.7 KiB
TypeScript
68 lines
1.7 KiB
TypeScript
import { Plugin } from "..";
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import sharp from "sharp";
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export default class ImageOptimization extends Plugin {
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build: undefined;
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name = "image-optimization";
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rewriteTriggers = ["png", "gif", "jpg", "jpeg", "webp", "avif"];
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renameTo = "keep";
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isBinary = true;
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longLasting = false;
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logging = true;
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constructor(logging = true) {
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super();
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this.logging = logging;
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}
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async rewriteFile(file: Buffer, filePath: string) {
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const nonOptimized = file;
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const type = filePath.split(".").at(-1);
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let data: Buffer = file;
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if (type == "webp") {
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data = await sharp(file).webp({ lossless: true }).toBuffer();
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}
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if (type == "avif") {
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data = await sharp(file).avif({ lossless: true }).toBuffer();
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}
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if (type == "jpg" || type == "jpeg") {
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data = await sharp(file).jpeg({ quality: 100 }).toBuffer();
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}
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if (type == "png") {
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data = await sharp(file).png({ quality: 100 }).toBuffer();
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}
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if (type == "gif") {
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const gif = sharp(file, { animated: true });
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const pageCount = (await gif.metadata()).pages;
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if (pageCount == 1) {
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data = await sharp(file, { animated: false })
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.gif({ colors: 16 })
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.toBuffer();
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} else {
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data = await sharp(file, { animated: true })
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.gif({ colors: 16 })
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.toBuffer();
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}
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}
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if (nonOptimized.byteLength < data.byteLength) {
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if (this.logging) {
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console.log(
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"❌ " +
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filePath +
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"(" +
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nonOptimized.byteLength +
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"B) optimized was " +
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data.byteLength +
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"B. It has been skipped."
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);
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}
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data = nonOptimized;
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}
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return data;
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}
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}
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