31 lines
786 B
TypeScript
31 lines
786 B
TypeScript
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import { PDFWorkerMessage } from './worker'
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import { PDFWorker } from '../dist/cache/worker'
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const scriptUrlFromFunction = (fn: Function): string => {
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const blob = new Blob(['(' + fn.toString() + ')()'], { type: 'application/javascript' })
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return URL.createObjectURL(blob)
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}
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export class PDFWorkerHelper extends Worker {
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constructor () {
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const url = scriptUrlFromFunction(PDFWorker)
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super(url)
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}
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generatePDF (imgURLs: string[], imgType: 'svg' | 'png', width: number, height: number): Promise<ArrayBuffer> {
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const msg: PDFWorkerMessage = [
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imgURLs,
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imgType,
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width,
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height,
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]
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this.postMessage(msg)
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return new Promise((resolve) => {
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this.addEventListener('message', (e) => {
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resolve(e.data)
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})
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})
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}
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}
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