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Remove most build-time require-calls from the src/display/-folder

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By leveraging import maps we can get rid of *most* of the remaining `require`-calls in the `src/display/`-folder, since we should strive to use modern `import`-statements wherever possible.
The only remaining cases are Node.js-specific dependencies, since those seem very difficult to convert unless we start producing a bundle *specifically* for Node.js environments.
This commit is contained in:
Jonas Jenwald 2023-07-13 11:58:16 +02:00
parent e81c084a92
commit d022912719
11 changed files with 122 additions and 54 deletions
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65
src/display/api.js
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@ -58,12 +58,22 @@ import {
StatTimer,
} from "./display_utils.js";
import { FontFaceObject, FontLoader } from "./font_loader.js";
import {
NodeCanvasFactory,
NodeCMapReaderFactory,
NodeFilterFactory,
NodeStandardFontDataFactory,
} from "display-node_utils";
import { CanvasGraphics } from "./canvas.js";
import { GlobalWorkerOptions } from "./worker_options.js";
import { MessageHandler } from "../shared/message_handler.js";
import { Metadata } from "./metadata.js";
import { OptionalContentConfig } from "./optional_content_config.js";
import { PDFDataTransportStream } from "./transport_stream.js";
import { PDFFetchStream } from "display-fetch_stream";
import { PDFNetworkStream } from "display-network";
import { PDFNodeStream } from "display-node_stream";
import { SVGGraphics } from "display-svg";
import { XfaText } from "./xfa_text.js";
const DEFAULT_RANGE_CHUNK_SIZE = 65536; // 2^16 = 65536
@ -72,54 +82,21 @@ const DELAYED_CLEANUP_TIMEOUT = 5000; // ms
const DefaultCanvasFactory =
typeof PDFJSDev !== "undefined" && PDFJSDev.test("GENERIC") && isNodeJS
? require("./node_utils.js").NodeCanvasFactory
? NodeCanvasFactory
: DOMCanvasFactory;
const DefaultCMapReaderFactory =
typeof PDFJSDev !== "undefined" && PDFJSDev.test("GENERIC") && isNodeJS
? require("./node_utils.js").NodeCMapReaderFactory
? NodeCMapReaderFactory
: DOMCMapReaderFactory;
const DefaultFilterFactory =
typeof PDFJSDev !== "undefined" && PDFJSDev.test("GENERIC") && isNodeJS
? require("./node_utils.js").NodeFilterFactory
? NodeFilterFactory
: DOMFilterFactory;
const DefaultStandardFontDataFactory =
typeof PDFJSDev !== "undefined" && PDFJSDev.test("GENERIC") && isNodeJS
? require("./node_utils.js").NodeStandardFontDataFactory
? NodeStandardFontDataFactory
: DOMStandardFontDataFactory;
let createPDFNetworkStream;
if (typeof PDFJSDev === "undefined") {
const streamsPromise = Promise.all([
import("./network.js"),
import("./fetch_stream.js"),
]);
createPDFNetworkStream = async params => {
const [{ PDFNetworkStream }, { PDFFetchStream }] = await streamsPromise;
return isValidFetchUrl(params.url)
? new PDFFetchStream(params)
: new PDFNetworkStream(params);
};
} else if (PDFJSDev.test("GENERIC || CHROME")) {
if (PDFJSDev.test("GENERIC") && isNodeJS) {
const { PDFNodeStream } = require("./node_stream.js");
createPDFNetworkStream = params => {
return new PDFNodeStream(params);
};
} else {
const { PDFNetworkStream } = require("./network.js");
const { PDFFetchStream } = require("./fetch_stream.js");
createPDFNetworkStream = params => {
return isValidFetchUrl(params.url)
? new PDFFetchStream(params)
: new PDFNetworkStream(params);
};
}
}
/**
* @typedef { Int8Array | Uint8Array | Uint8ClampedArray |
* Int16Array | Uint16Array |
@ -448,6 +425,19 @@ function getDocument(src) {
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
throw new Error("Not implemented: createPDFNetworkStream");
}
const createPDFNetworkStream = params => {
if (
typeof PDFJSDev !== "undefined" &&
PDFJSDev.test("GENERIC") &&
isNodeJS
) {
return new PDFNodeStream(params);
}
return isValidFetchUrl(params.url)
? new PDFFetchStream(params)
: new PDFNetworkStream(params);
};
networkStream = createPDFNetworkStream({
url,
length,
@ -3454,5 +3444,6 @@ export {
PDFWorker,
PDFWorkerUtil,
RenderTask,
SVGGraphics,
version,
};