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report timing breakdown (#2000)

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fix corner cases with `sourceMap`

fixes #1998
This commit is contained in:
Alex Lam S.L
2017-05-25 07:15:55 +08:00
committed by GitHub
parent a277fe168d
commit 793d61499b
5 changed files with 47 additions and 27 deletions
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47
lib/minify.js
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@@ -30,9 +30,6 @@ function set_shorthand(name, options, keys) {
function minify(files, options) {
var warn_function = AST_Node.warn_function;
try {
if (typeof files == "string") {
files = [ files ];
}
options = defaults(options, {
compress: {},
ie8: false,
@@ -41,10 +38,14 @@ function minify(files, options) {
output: {},
parse: {},
sourceMap: false,
timings: false,
toplevel: false,
warnings: false,
wrap: false,
}, true);
var timings = options.timings && {
start: Date.now()
};
set_shorthand("ie8", options, [ "compress", "mangle", "output" ]);
set_shorthand("keep_fnames", options, [ "compress", "mangle" ]);
set_shorthand("toplevel", options, [ "compress", "mangle" ]);
@@ -75,10 +76,14 @@ function minify(files, options) {
warnings.push(warning);
};
}
if (timings) timings.parse = Date.now();
var toplevel;
if (files instanceof AST_Toplevel) {
toplevel = files;
} else {
if (typeof files == "string") {
files = [ files ];
}
options.parse = options.parse || {};
options.parse.toplevel = null;
for (var name in files) {
@@ -95,19 +100,23 @@ function minify(files, options) {
if (options.wrap) {
toplevel = toplevel.wrap_commonjs(options.wrap);
}
if (options.compress) {
toplevel.figure_out_scope(options.mangle);
toplevel = new Compressor(options.compress).compress(toplevel);
}
if (timings) timings.scope1 = Date.now();
if (options.compress) toplevel.figure_out_scope(options.mangle);
if (timings) timings.compress = Date.now();
if (options.compress) toplevel = new Compressor(options.compress).compress(toplevel);
if (timings) timings.scope2 = Date.now();
if (options.mangle) toplevel.figure_out_scope(options.mangle);
if (timings) timings.mangle = Date.now();
if (options.mangle) {
toplevel.figure_out_scope(options.mangle);
base54.reset();
toplevel.compute_char_frequency(options.mangle);
toplevel.mangle_names(options.mangle);
if (options.mangle.properties) {
toplevel = mangle_properties(toplevel, options.mangle.properties);
}
}
if (timings) timings.properties = Date.now();
if (options.mangle && options.mangle.properties) {
toplevel = mangle_properties(toplevel, options.mangle.properties);
}
if (timings) timings.output = Date.now();
var result = {};
if (options.output.ast) {
result.ast = toplevel;
@@ -123,7 +132,9 @@ function minify(files, options) {
root: options.sourceMap.root
});
if (options.sourceMap.includeSources) {
for (var name in files) {
if (files instanceof AST_Toplevel) {
throw new Error("original source content unavailable");
} else for (var name in files) {
options.output.source_map.get().setSourceContent(name, files[name]);
}
}
@@ -142,6 +153,18 @@ function minify(files, options) {
}
}
}
if (timings) {
timings.end = Date.now();
result.timings = {
parse: 1e-3 * (timings.scope1 - timings.parse),
scope: 1e-3 * (timings.compress - timings.scope1 + timings.mangle - timings.scope2),
compress: 1e-3 * (timings.scope2 - timings.compress),
mangle: 1e-3 * (timings.properties - timings.mangle),
properties: 1e-3 * (timings.output - timings.properties),
output: 1e-3 * (timings.end - timings.output),
total: 1e-3 * (timings.end - timings.start)
}
}
if (warnings.length) {
result.warnings = warnings;
}