Ivan Fontosh
8f8eef53c9
- Optimize imported scene preview images (smart WebP/JPEG/PNG, preserve alpha, keep pixel size) - Update converter to re-encode existing image assets with same algorithm - Improve import/export progress overlay and reduce presentation slide stutter Made-with: Cursor
55 lines
1.7 KiB
TypeScript
55 lines
1.7 KiB
TypeScript
import assert from 'node:assert/strict';
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import test from 'node:test';
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import sharp from 'sharp';
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import { optimizeImageBufferVisuallyLossless } from './optimizeImageImport.lib.mjs';
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void test('optimizeImageBufferVisuallyLossless: preserves dimensions for opaque RGB', async () => {
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const input = await sharp({
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create: {
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width: 400,
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height: 300,
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channels: 3,
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background: { r: 10, g: 100, b: 200 },
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},
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})
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.png({ compressionLevel: 0 })
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.toBuffer();
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const out = await optimizeImageBufferVisuallyLossless(input);
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assert.equal(out.passthrough, false);
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assert.ok(out.buffer.length > 0);
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assert.ok(out.buffer.length < input.length);
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const meta = await sharp(out.buffer).metadata();
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assert.equal(meta.width, 400);
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assert.equal(meta.height, 300);
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});
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void test('optimizeImageBufferVisuallyLossless: preserves dimensions for alpha', async () => {
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const input = await sharp({
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create: {
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width: 200,
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height: 200,
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channels: 4,
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background: { r: 255, g: 0, b: 0, alpha: 0.5 },
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},
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})
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.png({ compressionLevel: 0 })
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.toBuffer();
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const out = await optimizeImageBufferVisuallyLossless(input);
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assert.equal(out.passthrough, false);
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assert.ok(out.mime === 'image/webp' || out.mime === 'image/png');
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assert.ok(out.buffer.length < input.length);
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const meta = await sharp(out.buffer).metadata();
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assert.equal(meta.width, 200);
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assert.equal(meta.height, 200);
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assert.equal(meta.hasAlpha, true);
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});
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void test('optimizeImageBufferVisuallyLossless: non-image buffer is passthrough', async () => {
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const out = await optimizeImageBufferVisuallyLossless(Buffer.from('not an image'));
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assert.equal(out.passthrough, true);
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});
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