ProgressPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
function ProgressPlugin(options) {
if(typeof options === "function") {
options = {
handler: options
};
}
options = options || {};
this.profile = options.profile;
this.handler = options.handler;
}
module.exports = ProgressPlugin;
ProgressPlugin.prototype.apply = function(compiler) {
var handler = this.handler || defaultHandler;
var profile = this.profile;
if(compiler.compilers) {
var states = new Array(compiler.compilers.length);
compiler.compilers.forEach(function(compiler, idx) {
compiler.apply(new ProgressPlugin(function(p, msg) {
states[idx] = Array.prototype.slice.apply(arguments);
handler.apply(null, [
states.map(function(state) {
return state && state[0] || 0;
}).reduce(function(a, b) {
return a + b;
}) / states.length,
"[" + idx + "] " + msg
].concat(Array.prototype.slice.call(arguments, 2)));
}));
});
} else {
var lastModulesCount = 0;
var moduleCount = 500;
var doneModules = 0;
var activeModules = [];
var update = function update(module) {
handler(
0.1 + (doneModules / Math.max(lastModulesCount, moduleCount)) * 0.6,
"building modules",
doneModules + "/" + moduleCount + " modules",
activeModules.length + " active",
activeModules[activeModules.length - 1]
);
};
var moduleDone = function moduleDone(module) {
doneModules++;
var ident = module.identifier();
if(ident) {
var idx = activeModules.indexOf(ident);
if(idx >= 0) activeModules.splice(idx, 1);
}
update();
};
compiler.plugin("compilation", function(compilation) {
if(compilation.compiler.isChild()) return;
lastModulesCount = moduleCount;
moduleCount = 0;
doneModules = 0;
handler(0, "compiling");
compilation.plugin("build-module", function(module) {
moduleCount++;
var ident = module.identifier();
if(ident) {
activeModules.push(ident);
}
update();
});
compilation.plugin("failed-module", moduleDone);
compilation.plugin("succeed-module", moduleDone);
var syncHooks = {
"seal": [0.71, "sealing"],
"optimize": [0.72, "optimizing"],
"optimize-modules-basic": [0.73, "basic module optimization"],
"optimize-modules": [0.74, "module optimization"],
"optimize-modules-advanced": [0.75, "advanced module optimization"],
"optimize-chunks-basic": [0.76, "basic chunk optimization"],
"optimize-chunks": [0.77, "chunk optimization"],
"optimize-chunks-advanced": [0.78, "advanced chunk optimization"],
// optimize-tree
"revive-modules": [0.80, "module reviving"],
"optimize-module-order": [0.81, "module order optimization"],
"optimize-module-ids": [0.82, "module id optimization"],
"revive-chunks": [0.83, "chunk reviving"],
"optimize-chunk-order": [0.84, "chunk order optimization"],
"optimize-chunk-ids": [0.85, "chunk id optimization"],
"before-hash": [0.86, "hashing"],
"before-module-assets": [0.87, "module assets processing"],
"before-chunk-assets": [0.88, "chunk assets processing"],
"additional-chunk-assets": [0.89, "additional chunk assets processing"],
"record": [0.90, "recording"]
};
Object.keys(syncHooks).forEach(function(name) {
var pass = 0;
var settings = syncHooks[name];
compilation.plugin(name, function() {
if(pass++ > 0)
handler(settings[0], settings[1], "pass " + pass);
else
handler(settings[0], settings[1]);
});
});
compilation.plugin("optimize-tree", function(chunks, modules, callback) {
handler(0.79, "module and chunk tree optimization");
callback();
});
compilation.plugin("additional-assets", function(callback) {
handler(0.91, "additional asset processing");
callback();
});
compilation.plugin("optimize-chunk-assets", function(chunks, callback) {
handler(0.92, "chunk asset optimization");
callback();
});
compilation.plugin("optimize-assets", function(assets, callback) {
handler(0.94, "asset optimization");
callback();
});
});
compiler.plugin("emit", function(compilation, callback) {
handler(0.95, "emitting");
callback();
});
compiler.plugin("done", function() {
handler(1, "");
});
}
var lineCaretPosition = 0,
lastState, lastStateTime;
function defaultHandler(percentage, msg) {
var state = msg;
var details = Array.prototype.slice.call(arguments, 2);
if(percentage < 1) {
percentage = Math.floor(percentage * 100);
msg = percentage + "% " + msg;
if(percentage < 100) {
msg = " " + msg;
}
if(percentage < 10) {
msg = " " + msg;
}
details.forEach(function(detail) {
if(!detail) return;
if(detail.length > 40) {
detail = "..." + detail.substr(detail.length - 37);
}
msg += " " + detail;
});
}
if(profile) {
state = state.replace(/^\d+\/\d+\s+/, "");
if(percentage === 0) {
lastState = null;
lastStateTime = +new Date();
} else if(state !== lastState || percentage === 1) {
var now = +new Date();
if(lastState) {
var stateMsg = (now - lastStateTime) + "ms " + lastState;
goToLineStart(stateMsg);
process.stderr.write(stateMsg + "\n");
lineCaretPosition = 0;
}
lastState = state;
lastStateTime = now;
}
}
goToLineStart(msg);
process.stderr.write(msg);
}
function goToLineStart(nextMessage) {
var str = "";
for(; lineCaretPosition > nextMessage.length; lineCaretPosition--) {
str += "\b \b";
}
for(var i = 0; i < lineCaretPosition; i++) {
str += "\b";
}
lineCaretPosition = nextMessage.length;
if(str) process.stderr.write(str);
}
};