zotero/scripts/babel-worker.js
Fletcher Hazlehurst a2620b757d Update SingleFile and fix several bugs
- Using `sandboxPrototype` properly uses window as prototype
- This commit removes the need for our patch in babel-worker.js:
3d0bc4cf9f
- We properly inject into frames in the client if we ever include frames
2020-11-02 17:24:14 -07:00

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3.5 KiB
JavaScript

/* global onmessage: true, postMessage: false */
'use strict';
const fs = require('fs-extra');
const path = require('path');
const babel = require('@babel/core');
const multimatch = require('multimatch');
const options = JSON.parse(fs.readFileSync('.babelrc'));
const cluster = require('cluster');
const { comparePaths } = require('./utils');
/* exported onmessage */
async function babelWorker(ev) {
const t1 = Date.now();
const sourcefile = ev.file;
const localOptions = {
filename: sourcefile
};
const outfile = path.join('build', sourcefile.replace('.jsx', '.js'));
const postError = (error) => {
process.send({
sourcefile,
outfile,
error
});
};
var isSkipped = false;
var transformed;
try {
let contents = await fs.readFile(sourcefile, 'utf8');
// Patch react
if (comparePaths(sourcefile, 'resource/react.js')) {
transformed = contents.replace('instanceof Error', '.constructor.name == "Error"')
}
// Patch react-dom
else if (comparePaths(sourcefile, 'resource/react-dom.js')) {
transformed = contents.replace(/ ownerDocument\.createElement\((.*?)\)/gi, 'ownerDocument.createElementNS(HTML_NAMESPACE, $1)')
.replace('element instanceof win.HTMLIFrameElement',
'typeof element != "undefined" && element.tagName.toLowerCase() == "iframe"')
.replace("isInputEventSupported = false", 'isInputEventSupported = true');
}
// Patch react-virtualized
else if (comparePaths(sourcefile, 'resource/react-virtualized.js')) {
transformed = contents.replace('scrollDiv = document.createElement("div")', 'scrollDiv = document.createElementNS("http://www.w3.org/1999/xhtml", "div")')
.replace('document.body.appendChild(scrollDiv)', 'document.documentElement.appendChild(scrollDiv)')
.replace('document.body.removeChild(scrollDiv)', 'document.documentElement.removeChild(scrollDiv)');
}
// Patch single-file
else if (sourcefile === 'resource/SingleFile/lib/single-file/single-file.js') {
// We need to add this bit that is done for the cli implementation of singleFile
// See resource/SingleFile/cli/back-ends/common/scripts.js
const WEB_SCRIPTS = [
"lib/single-file/processors/hooks/content/content-hooks-web.js",
"lib/single-file/processors/hooks/content/content-hooks-frames-web.js"
];
let basePath = 'resource/SingleFile/';
function readScriptFile(path, basePath) {
return new Promise((resolve, reject) =>
fs.readFile(basePath + path, (err, data) => {
if (err) {
reject(err);
} else {
resolve(data.toString() + "\n");
}
})
);
}
const webScripts = {};
await Promise.all(
WEB_SCRIPTS.map(async path => webScripts[path] = await readScriptFile(path, basePath))
);
transformed = contents + '\n\n'
+ "this.singlefile.lib.getFileContent = filename => (" + JSON.stringify(webScripts) + ")[filename];\n";
}
else if ('ignore' in options && options.ignore.some(ignoreGlob => multimatch(sourcefile, ignoreGlob).length)) {
transformed = contents;
isSkipped = true;
} else {
try {
({ code: transformed } = await babel.transformAsync(
contents,
Object.assign(
localOptions,
options
)
));
} catch (error) { return postError(`Babel error: ${error}`);}
}
await fs.outputFile(outfile, transformed);
const t2 = Date.now();
process.send({
isSkipped,
sourcefile,
outfile,
processingTime: t2 - t1
});
} catch (error) { return postError(`I/O error: ${error}`); }
}
module.exports = babelWorker;
if (cluster.isWorker) {
process.on('message', babelWorker);
}