forked from jupyterlab/jupyterlab
/
webpack.config.js
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/
webpack.config.js
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/*-----------------------------------------------------------------------------
| Copyright (c) Jupyter Development Team.
| Distributed under the terms of the Modified BSD License.
|----------------------------------------------------------------------------*/
var path = require('path');
var fs = require('fs-extra');
var Handlebars = require('handlebars');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var webpack = require('webpack');
var DuplicatePackageCheckerPlugin = require('duplicate-package-checker-webpack-plugin');
var Build = require('@jupyterlab/buildutils').Build;
var package_data = require('./package.json');
// Handle the extensions.
var jlab = package_data.jupyterlab;
var extensions = jlab.extensions;
var mimeExtensions = jlab.mimeExtensions;
Build.ensureAssets({
packageNames: Object.keys(mimeExtensions).concat(Object.keys(extensions)),
output: jlab.outputDir
});
// Create the entry point file.
var source = fs.readFileSync('index.js').toString();
var template = Handlebars.compile(source);
var data = {
jupyterlab_extensions: extensions,
jupyterlab_mime_extensions: mimeExtensions
};
var result = template(data);
// Ensure a clear build directory.
var buildDir = path.resolve(jlab.buildDir);
if (fs.existsSync(buildDir)) {
fs.removeSync(buildDir);
}
fs.ensureDirSync(buildDir);
fs.writeFileSync(path.join(buildDir, 'index.out.js'), result);
fs.copySync('./package.json', path.join(buildDir, 'package.json'));
fs.copySync('./templates/error.html', path.join(buildDir, 'error.html'));
// Set up variables for watch mode.
var localLinked = {};
var ignoreCache = Object.create(null);
Object.keys(jlab.linkedPackages).forEach(function(name) {
var localPath = require.resolve(path.join(name, 'package.json'));
localLinked[name] = path.dirname(localPath);
});
/**
* Sync a local path to a linked package path if they are files and differ.
*/
function maybeSync(localPath, name, rest) {
var stats = fs.statSync(localPath);
if (!stats.isFile(localPath)) {
return;
}
var source = fs.realpathSync(path.join(jlab.linkedPackages[name], rest));
if (source === fs.realpathSync(localPath)) {
return;
}
fs.watchFile(source, { interval: 500 }, function(curr) {
if (!curr || curr.nlink === 0) {
return;
}
try {
fs.copySync(source, localPath);
} catch (err) {
console.error(err);
}
});
}
/**
* A WebPack Plugin that copies the assets to the static directory.
*/
function JupyterLabPlugin() {}
JupyterLabPlugin.prototype.apply = function(compiler) {
compiler.hooks.afterEmit.tap(
'JupyterLabPlugin',
function() {
var staticDir = jlab.staticDir;
if (!staticDir) {
return;
}
// Ensure a clean static directory on the first emit.
if (this._first && fs.existsSync(staticDir)) {
fs.removeSync(staticDir);
}
this._first = false;
fs.copySync(buildDir, staticDir);
}.bind(this)
);
};
JupyterLabPlugin.prototype._first = true;
module.exports = {
mode: 'development',
entry: {
main: ['whatwg-fetch', path.resolve(buildDir, 'index.out.js')]
},
output: {
path: path.resolve(buildDir),
publicPath: jlab.publicUrl || '{{base_url}}lab/static/',
filename: '[name].[chunkhash].js'
},
optimization: {
splitChunks: {
chunks: 'all'
}
},
module: {
rules: [
{ test: /^JUPYTERLAB_RAW_LOADER_/, use: 'raw-loader' },
{ test: /^JUPYTERLAB_URL_LOADER_/, use: 'url-loader?limit=10000' },
{ test: /^JUPYTERLAB_FILE_LOADER_/, use: 'file-loader' },
{ test: /\.css$/, use: ['style-loader', 'css-loader'] },
{ test: /\.md$/, use: 'raw-loader' },
{ test: /\.txt$/, use: 'raw-loader' },
{
test: /\.js$/,
use: ['source-map-loader'],
enforce: 'pre',
// eslint-disable-next-line no-undef
exclude: /node_modules/
},
{ test: /\.(jpg|png|gif)$/, use: 'file-loader' },
{ test: /\.js.map$/, use: 'file-loader' },
{
test: /\.woff2(\?v=\d+\.\d+\.\d+)?$/,
use: 'url-loader?limit=10000&mimetype=application/font-woff'
},
{
test: /\.woff(\?v=\d+\.\d+\.\d+)?$/,
use: 'url-loader?limit=10000&mimetype=application/font-woff'
},
{
test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/,
use: 'url-loader?limit=10000&mimetype=application/octet-stream'
},
{
test: /\.otf(\?v=\d+\.\d+\.\d+)?$/,
use: 'url-loader?limit=10000&mimetype=application/octet-stream'
},
{ test: /\.eot(\?v=\d+\.\d+\.\d+)?$/, use: 'file-loader' },
{
test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
use: 'url-loader?limit=10000&mimetype=image/svg+xml'
}
]
},
watchOptions: {
ignored: function(localPath) {
localPath = path.resolve(localPath);
if (localPath in ignoreCache) {
return ignoreCache[localPath];
}
// Limit the watched files to those in our local linked package dirs.
var ignore = true;
Object.keys(localLinked).some(function(name) {
// Bail if already found.
var rootPath = localLinked[name];
var contained = localPath.indexOf(rootPath + path.sep) !== -1;
if (localPath !== rootPath && !contained) {
return false;
}
var rest = localPath.slice(rootPath.length);
if (rest.indexOf('node_modules') === -1) {
ignore = false;
maybeSync(localPath, name, rest);
}
return true;
});
ignoreCache[localPath] = ignore;
return ignore;
}
},
node: {
fs: 'empty'
},
bail: true,
devtool: 'source-map',
plugins: [
new DuplicatePackageCheckerPlugin({
verbose: true,
exclude(instance) {
// ignore known duplicates
return ['domelementtype', 'hash-base', 'inherits'].includes(
instance.name
);
}
}),
new HtmlWebpackPlugin({
template: path.join('templates', 'template.html'),
title: jlab.name || 'JupyterLab'
}),
new webpack.HashedModuleIdsPlugin(),
new JupyterLabPlugin({})
]
};