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Print more warnings about potential problems in Node.js environments

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- Warn if the "regular" PDF.js build is used in Node.js environments, since that won't load any of the relevant polyfills.

 - Warn if the `require` function cannot be accessed, since currently we're just "swallowing" any errors.
This commit is contained in:
Jonas Jenwald 2024-12-07 14:01:00 +01:00
parent b870c5d2ad
commit c60a6d1ebd
1 changed files with 35 additions and 33 deletions
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68
src/display/node_utils.js
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@ -26,43 +26,45 @@ if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
);
}
if (
typeof PDFJSDev !== "undefined" &&
!PDFJSDev.test("SKIP_BABEL") &&
isNodeJS
) {
let canvas;
try {
const require = process
.getBuiltinModule("module")
.createRequire(import.meta.url);
if (isNodeJS) {
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("SKIP_BABEL")) {
warn("Please use the `legacy` build in Node.js environments.");
} else {
let canvas;
try {
canvas = require("@napi-rs/canvas");
} catch (ex) {
warn(`Cannot load "@napi-rs/canvas" package: "${ex}".`);
}
} catch {}
const require = process
.getBuiltinModule("module")
.createRequire(import.meta.url);
if (!globalThis.DOMMatrix) {
if (canvas?.DOMMatrix) {
globalThis.DOMMatrix = canvas.DOMMatrix;
} else {
warn("Cannot polyfill `DOMMatrix`, rendering may be broken.");
try {
canvas = require("@napi-rs/canvas");
} catch (ex) {
warn(`Cannot load "@napi-rs/canvas" package: "${ex}".`);
}
} catch (ex) {
warn(`Cannot access the \`require\` function: "${ex}".`);
}
}
if (!globalThis.ImageData) {
if (canvas?.ImageData) {
globalThis.ImageData = canvas.ImageData;
} else {
warn("Cannot polyfill `ImageData`, rendering may be broken.");
if (!globalThis.DOMMatrix) {
if (canvas?.DOMMatrix) {
globalThis.DOMMatrix = canvas.DOMMatrix;
} else {
warn("Cannot polyfill `DOMMatrix`, rendering may be broken.");
}
}
}
if (!globalThis.Path2D) {
if (canvas?.Path2D) {
globalThis.Path2D = canvas.Path2D;
} else {
warn("Cannot polyfill `Path2D`, rendering may be broken.");
if (!globalThis.ImageData) {
if (canvas?.ImageData) {
globalThis.ImageData = canvas.ImageData;
} else {
warn("Cannot polyfill `ImageData`, rendering may be broken.");
}
}
if (!globalThis.Path2D) {
if (canvas?.Path2D) {
globalThis.Path2D = canvas.Path2D;
} else {
warn("Cannot polyfill `Path2D`, rendering may be broken.");
}
}
}
}