107 lines
2.3 KiB
JavaScript
107 lines
2.3 KiB
JavaScript
'use strict';
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const weblog = require('webpack-log');
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module.exports = function ctx(compiler, options) {
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const context = {
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state: false,
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webpackStats: null,
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callbacks: [],
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options,
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compiler,
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watching: null,
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forceRebuild: false,
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};
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if (options.logger) {
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context.log = options.logger;
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} else {
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context.log = weblog({
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level: options.logLevel || 'info',
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name: 'wdm',
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timestamp: options.logTime,
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});
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}
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const { log } = context;
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function done(stats) {
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// We are now on valid state
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context.state = true;
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context.webpackStats = stats;
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// Do the stuff in nextTick, because bundle may be invalidated
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// if a change happened while compiling
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process.nextTick(() => {
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// check if still in valid state
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if (!context.state) {
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return;
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}
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// print webpack output
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context.options.reporter(context.options, {
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log,
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state: true,
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stats,
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});
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// execute callback that are delayed
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const cbs = context.callbacks;
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context.callbacks = [];
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cbs.forEach((cb) => {
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cb(stats);
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});
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});
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// In lazy mode, we may issue another rebuild
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if (context.forceRebuild) {
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context.forceRebuild = false;
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rebuild();
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}
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}
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function invalid(callback) {
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if (context.state) {
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context.options.reporter(context.options, {
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log,
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state: false,
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});
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}
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// We are now in invalid state
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context.state = false;
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if (typeof callback === 'function') {
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callback();
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}
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}
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function rebuild() {
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if (context.state) {
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context.state = false;
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context.compiler.run((err) => {
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if (err) {
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log.error(err.stack || err);
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if (err.details) {
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log.error(err.details);
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}
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}
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});
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} else {
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context.forceRebuild = true;
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}
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}
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context.rebuild = rebuild;
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context.compiler.hooks.invalid.tap('WebpackDevMiddleware', invalid);
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context.compiler.hooks.run.tap('WebpackDevMiddleware', invalid);
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context.compiler.hooks.done.tap('WebpackDevMiddleware', done);
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context.compiler.hooks.watchRun.tap(
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'WebpackDevMiddleware',
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(comp, callback) => {
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invalid(callback);
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}
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);
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return context;
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};
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