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Simplify PDF utils dynamic imports for Bun runtime.

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Remove pkg bytecode workarounds that are no longer needed outside Node pkg builds.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Tom Butcher 2026-07-28 22:03:14 +01:00
parent 7d8031e009
commit 07cbd2e07c
1 changed files with 31 additions and 45 deletions
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76
src/pdfUtils.js
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@ -2,53 +2,39 @@
* PDF conversion utilities loaded on demand so headless startup
* does not require ESM-only pdf-to-img at module load time.
*/
import { createRequire } from 'node:module'
import { pathToFileURL } from 'node:url'
import { pathToFileURL } from "node:url";
import { createRequire } from "node:module";
const require = createRequire(import.meta.url)
const require = createRequire(import.meta.url);
// Dynamic import() from pkg snapshot bytecode throws "Invalid host defined options"
// (nodejs/node#43663). Use require() for CJS packages in pkg; ESM packages need
// --no-bytecode on the pkg build so file-URL import() works.
async function importPackage(name) {
const packagePath = require.resolve(name)
if (typeof process.pkg !== 'undefined') {
try {
return require(packagePath)
} catch (error) {
if (error?.code !== 'ERR_REQUIRE_ESM') {
throw error
}
}
}
return import(pathToFileURL(packagePath).href)
const packagePath = require.resolve(name);
return import(pathToFileURL(packagePath).href);
}
function resolveDefault(module) {
return module?.default ?? module
return module?.default ?? module;
}
export async function convertPDFToImage(pdfInput, options = {}) {
const [pdfToImgModule, sharpModule] = await Promise.all([
importPackage('pdf-to-img'),
importPackage('sharp')
])
const { pdf } = pdfToImgModule
const sharp = resolveDefault(sharpModule)
importPackage("pdf-to-img"),
importPackage("sharp"),
]);
const { pdf } = pdfToImgModule;
const sharp = resolveDefault(sharpModule);
try {
const { width, height, page_numbers, scale = 2, ...pdfOnlyOptions } =
options
options;
const pdfOptions = {
scale,
...pdfOnlyOptions
}
...pdfOnlyOptions,
};
const document = await pdf(pdfInput, pdfOptions)
const outputImages = []
const document = await pdf(pdfInput, pdfOptions);
const outputImages = [];
if (
page_numbers &&
@ -56,37 +42,37 @@ export async function convertPDFToImage(pdfInput, options = {}) {
page_numbers.length > 0
) {
for (const pageNum of page_numbers) {
let image = await document.getPage(pageNum)
let image = await document.getPage(pageNum);
if (width || height) {
const resizeOptions = {}
if (width) resizeOptions.width = width
if (height) resizeOptions.height = height
image = await sharp(image).resize(resizeOptions).toBuffer()
const resizeOptions = {};
if (width) resizeOptions.width = width;
if (height) resizeOptions.height = height;
image = await sharp(image).resize(resizeOptions).toBuffer();
}
outputImages.push(image)
outputImages.push(image);
}
} else {
for await (const image of document) {
let processedImage = image
let processedImage = image;
if (width || height) {
const resizeOptions = {}
if (width) resizeOptions.width = width
if (height) resizeOptions.height = height
const resizeOptions = {};
if (width) resizeOptions.width = width;
if (height) resizeOptions.height = height;
processedImage = await sharp(image)
.resize(resizeOptions)
.toBuffer()
.toBuffer();
}
outputImages.push(processedImage)
outputImages.push(processedImage);
}
}
return outputImages
return outputImages;
} catch (error) {
console.error('Error converting PDF to image:', error)
throw error
console.error("Error converting PDF to image:", error);
throw error;
}
}