23 lines
685 B
TypeScript
23 lines
685 B
TypeScript
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import { env } from '../env';
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export function bufferToImage(buf: Blob): Promise<HTMLImageElement> {
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return new Promise((resolve, reject) => {
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if (!(buf instanceof Blob)) {
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return reject('bufferToImage - expected buf to be of type: Blob')
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}
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const reader = new FileReader()
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reader.onload = () => {
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if (typeof reader.result !== 'string') {
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return reject('bufferToImage - expected reader.result to be a string, in onload')
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}
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const img = env.getEnv().createImageElement()
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img.onload = () => resolve(img)
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img.onerror = reject
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img.src = reader.result
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}
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reader.onerror = reject
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reader.readAsDataURL(buf)
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})
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}
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