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15 lines
628 B
TypeScript
15 lines
628 B
TypeScript
const sharp = require('sharp') as typeof import('sharp').default;
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// PDFKit and the Word image renderer accept JPEG/PNG. The source bytes and
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// their recorded SHA-256 remain untouched; WebP is only converted for display.
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export async function renderableInspectionImage(source: Buffer): Promise<Buffer> {
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const isWebp = source.length >= 12
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&& source.subarray(0, 4).toString('ascii') === 'RIFF'
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&& source.subarray(8, 12).toString('ascii') === 'WEBP';
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if (!isWebp) return source;
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return sharp(source)
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.resize({ width: 1600, height: 1200, fit: 'inside', withoutEnlargement: true })
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.png()
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.toBuffer();
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}
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