45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
import sharp from 'sharp';
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import { readdir, rename, unlink } from 'node:fs/promises';
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import { join, resolve } from 'node:path';
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const iconDirectory = resolve('./static');
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const iconFiles = (await readdir(iconDirectory))
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.filter((file) => file.toLocaleLowerCase().endsWith('.png'))
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.sort((left, right) => left.localeCompare(right));
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for (const file of iconFiles) {
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const source = join(iconDirectory, file);
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const temporary = join(iconDirectory, `.${file}.trimmed`);
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const before = await sharp(source).metadata();
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try {
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const result = await sharp(source)
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.trim({ background: { r: 0, g: 0, b: 0, alpha: 0 } })
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.extend({
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top: 2,
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right: 2,
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bottom: 2,
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left: 2,
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background: { r: 0, g: 0, b: 0, alpha: 0 },
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})
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.png({ compressionLevel: 9, adaptiveFiltering: true })
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.toFile(temporary);
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if (!result.width || !result.height || result.channels !== 4) {
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throw new Error(`${file} did not produce a valid transparent RGBA icon.`);
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}
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await rename(temporary, source);
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console.log(
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`${file}: ${before.width}x${before.height} -> ${result.width}x${result.height}`,
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);
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} catch (error) {
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await unlink(temporary).catch(() => {});
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throw error;
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}
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}
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console.log(
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`Trimmed ${iconFiles.length} static PNG icons with a 2px transparent safety margin.`,
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);
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