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Merge branch 'master' into harmony-v3.0.12

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alexlamsl
2017-05-27 18:12:10 +08:00
parent 39d4d7e20a c3f14a1481
commit aa835eb0f6
13 changed files with 497 additions and 94 deletions
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93
README.md
View File

@@ -123,7 +123,7 @@ a double dash to prevent input files being used as option arguments:
the source map.
`url` If specified, path to the source map to append in
`//# sourceMappingURL`.
--stats Display operations run time on STDERR.
--timings Display operations run time on STDERR.
--toplevel Compress and/or mangle variables in top level scope.
--verbose Print diagnostic messages.
--warn Print warning messages.
@@ -215,24 +215,54 @@ to prevent the `require`, `exports` and `$` names from being changed.
### CLI mangling property names (`--mangle-props`)
**Note:** this will probably break your code. Mangling property names is a
separate step, different from variable name mangling. Pass
`--mangle-props`. It will mangle all properties that are seen in some
object literal, or that are assigned to. For example:
**Note:** THIS WILL PROBABLY BREAK YOUR CODE. Mangling property names
is a separate step, different from variable name mangling. Pass
`--mangle-props` to enable it. It will mangle all properties in the
input code with the exception of built in DOM properties and properties
in core javascript classes. For example:
```javascript
// example.js
var x = {
foo: 1
baz_: 0,
foo_: 1,
calc: function() {
return this.foo_ + this.baz_;
}
};
x.bar = 2;
x["baz"] = 3;
x[condition ? "moo" : "boo"] = 4;
console.log(x.something());
x.bar_ = 2;
x["baz_"] = 3;
console.log(x.calc());
```
Mangle all properties (except for javascript `builtins`):
```bash
$ uglifyjs example.js -c -m --mangle-props
```
```javascript
var x={o:0,_:1,l:function(){return this._+this.o}};x.t=2,x.o=3,console.log(x.l());
```
Mangle all properties except for `reserved` properties:
```bash
$ uglifyjs example.js -c -m --mangle-props reserved=[foo_,bar_]
```
```javascript
var x={o:0,foo_:1,_:function(){return this.foo_+this.o}};x.bar_=2,x.o=3,console.log(x._());
```
Mangle all properties matching a `regex`:
```bash
$ uglifyjs example.js -c -m --mangle-props regex=/_$/
```
```javascript
var x={o:0,_:1,calc:function(){return this._+this.o}};x.l=2,x.o=3,console.log(x.calc());
```
In the above code, `foo`, `bar`, `baz`, `moo` and `boo` will be replaced
with single characters, while `something()` will be left as is.
Combining mangle properties options:
```bash
$ uglifyjs example.js -c -m --mangle-props regex=/_$/,reserved=[bar_]
```
```javascript
var x={o:0,_:1,calc:function(){return this._+this.o}};x.bar_=2,x.o=3,console.log(x.calc());
```
In order for this to be of any use, we avoid mangling standard JS names by
default (`--mangle-props builtins` to override).
@@ -241,7 +271,7 @@ A default exclusion file is provided in `tools/domprops.json` which should
cover most standard JS and DOM properties defined in various browsers. Pass
`--mangle-props domprops` to disable this feature.
You can also use a regular expression to define which property names should be
A regular expression can be used to define which property names should be
mangled. For example, `--mangle-props regex=/^_/` will only mangle property
names that start with an underscore.
@@ -269,9 +299,20 @@ Using quoted property name (`o["foo"]`) reserves the property name (`foo`)
so that it is not mangled throughout the entire script even when used in an
unquoted style (`o.foo`). Example:
```javascript
// stuff.js
var o = {
"foo": 1,
bar: 3
};
o.foo += o.bar;
console.log(o.foo);
```
```bash
$ echo 'var o={"foo":1, bar:3}; o.foo += o.bar; console.log(o.foo);' | uglifyjs --mangle-props keep_quoted -mc
var o={foo:1,a:3};o.foo+=o.a,console.log(o.foo);
$ uglifyjs stuff.js --mangle-props keep_quoted -c -m
```
```javascript
var o={foo:1,o:3};o.foo+=o.o,console.log(o.foo);
```
### Debugging property name mangling
@@ -282,6 +323,13 @@ would mangle to `o._$foo$_` with this option. This allows property mangling
of a large codebase while still being able to debug the code and identify
where mangling is breaking things.
```bash
$ uglifyjs stuff.js --mangle-props debug -c -m
```
```javascript
var o={_$foo$_:1,_$bar$_:3};o._$foo$_+=o._$bar$_,console.log(o._$foo$_);
```
You can also pass a custom suffix using `--mangle-props debug=XYZ`. This would then
mangle `o.foo` to `o._$foo$XYZ_`. You can change this each time you compile a
script to identify how a property got mangled. One technique is to pass a
@@ -662,10 +710,15 @@ UglifyJS.minify(code, { mangle: { toplevel: true } }).code;
### Mangle properties options
- `regex` — Pass a RegExp to only mangle certain names
- `keep_quoted` — Only mangle unquoted property names
- `debug` — Mangle names with the original name still present. Defaults to `false`.
Pass an empty string to enable, or a non-empty string to set the suffix.
- `reserved` (default: `[]`) -- Do not mangle property names listed in the
`reserved` array.
- `regex` (default: `null`) -— Pass a RegExp literal to only mangle property
names matching the regular expression.
- `keep_quoted` (default: `false`) -— Only mangle unquoted property names.
- `debug` (default: `false`) -— Mangle names with the original name still present.
Pass an empty string `""` to enable, or a non-empty string to set the debug suffix.
- `builtins` (default: `false`) -- Use `true` to allow the mangling of builtin
DOM properties. Not recommended to override this setting.
## Output options

15
bin/uglifyjs
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@@ -24,6 +24,7 @@ var options = {
program.version(info.name + ' ' + info.version);
program.parseArgv = program.parse;
program.parse = undefined;
if (process.argv.indexOf("ast") >= 0) program.helpInformation = UglifyJS.describe_ast;
program.option("-p, --parse <options>", "Specify parser options.", parse_js("parse", true));
program.option("-c, --compress [options]", "Enable compressor/specify compressor options.", parse_js("compress", true));
program.option("-m, --mangle [options]", "Mangle names/specify mangler options.", parse_js("mangle", true));
@@ -38,7 +39,7 @@ program.option("--keep-fnames", "Do not mangle/drop function names. Useful for c
program.option("--name-cache <file>", "File to hold mangled name mappings.");
program.option("--self", "Build UglifyJS as a library (implies --wrap UglifyJS)");
program.option("--source-map [options]", "Enable source map/specify source map options.", parse_source_map());
program.option("--stats", "Display operations run time on STDERR.")
program.option("--timings", "Display operations run time on STDERR.")
program.option("--toplevel", "Compress and/or mangle variables in toplevel scope.");
program.option("--verbose", "Print diagnostic messages.");
program.option("--warn", "Print warning messages.");
@@ -114,10 +115,10 @@ if (program.output == "ast") {
};
}
if (program.parse) {
if (program.parse.acorn || program.parse.spidermonkey) {
if (program.sourceMap) fatal("ERROR: inline source map only works with built-in parser");
} else {
if (!program.parse.acorn && !program.parse.spidermonkey) {
options.parse = program.parse;
} else if (program.sourceMap && program.sourceMap.content == "inline") {
fatal("ERROR: inline source map only works with built-in parser");
}
}
var convert_path = function(name) {
@@ -171,7 +172,7 @@ function run() {
UglifyJS.AST_Node.warn_function = function(msg) {
console.error("WARN:", msg);
};
if (program.stats) program.stats = Date.now();
if (program.timings) options.timings = true;
try {
if (program.parse) {
if (program.parse.acorn) {
@@ -258,7 +259,9 @@ function run() {
return value instanceof UglifyJS.Dictionary ? value.toObject() : value;
}));
}
if (program.stats) console.error("Elapsed:", Date.now() - program.stats);
if (result.timings) for (var phase in result.timings) {
console.error("- " + phase + ": " + result.timings[phase].toFixed(3) + "s");
}
}
function fatal(message) {

12
lib/compress.js
View File

@@ -991,15 +991,15 @@ merge(Compressor.prototype, {
CHANGED = true;
stat = stat.clone();
stat.condition = stat.condition.negate(compressor);
var funs = extract_functions_from_statement_array(ret);
var body = as_statement_array(stat.alternative).concat(ret);
var funs = extract_functions_from_statement_array(body);
stat.body = make_node(AST_BlockStatement, stat, {
body: body
});
stat.alternative = value ? make_node(AST_SimpleStatement, value, {
body: value.expression
}) : null;
ret = funs.concat([ stat.transform(compressor) ]);
ret = [ stat.transform(compressor) ].concat(funs);
continue loop;
}
//---
@@ -1248,7 +1248,7 @@ merge(Compressor.prototype, {
target.push(node);
return true;
}
if (node instanceof AST_Defun) {
if (node instanceof AST_Defun && (node === stat || !compressor.has_directive("use strict"))) {
target.push(node);
return true;
}
@@ -2386,11 +2386,13 @@ merge(Compressor.prototype, {
dirs.push(node);
return make_node(AST_EmptyStatement, node);
}
if (hoist_funs && node instanceof AST_Defun && !(tt.parent() instanceof AST_Export)) {
if (hoist_funs && node instanceof AST_Defun
&& !(tt.parent() instanceof AST_Export)
&& (tt.parent() === self || !compressor.has_directive("use strict"))) {
hoisted.push(node);
return make_node(AST_EmptyStatement, node);
}
if (node instanceof AST_Var && hoist_vars) {
if (hoist_vars && node instanceof AST_Var) {
node.definitions.forEach(function(def){
if (def.name instanceof AST_Destructuring) return;
vars.set(def.name.name, def);

45
lib/minify.js
View File

@@ -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" ]);
@@ -77,10 +78,14 @@ 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) {
@@ -97,19 +102,23 @@ 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) {
}
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;
@@ -125,7 +134,9 @@ 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]);
}
}
@@ -144,6 +155,18 @@ 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;
}

22
lib/scope.js
View File

@@ -237,16 +237,8 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
self.walk(tw);
// pass 2: find back references and eval
var func = null;
var globals = self.globals = new Dictionary();
self.globals = new Dictionary();
var tw = new TreeWalker(function(node, descend){
if (node instanceof AST_Lambda) {
var prev_func = func;
func = node;
descend();
func = prev_func;
return true;
}
if (node instanceof AST_LoopControl && node.label) {
node.label.thedef.references.push(node);
return true;
@@ -440,9 +432,7 @@ AST_Symbol.DEFMETHOD("unmangleable", function(options){
});
// labels are always mangleable
AST_Label.DEFMETHOD("unmangleable", function(){
return false;
});
AST_Label.DEFMETHOD("unmangleable", return_false);
AST_Symbol.DEFMETHOD("unreferenced", function(){
return this.definition().references.length == 0
@@ -453,13 +443,9 @@ AST_Symbol.DEFMETHOD("undeclared", function(){
return this.definition().undeclared;
});
AST_LabelRef.DEFMETHOD("undeclared", function(){
return false;
});
AST_LabelRef.DEFMETHOD("undeclared", return_false);
AST_Label.DEFMETHOD("undeclared", function(){
return false;
});
AST_Label.DEFMETHOD("undeclared", return_false);
AST_Symbol.DEFMETHOD("definition", function(){
return this.thedef;

2
package.json
View File

@@ -4,7 +4,7 @@
"homepage": "https://github.com/mishoo/UglifyJS2/tree/harmony",
"author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
"license": "BSD-2-Clause",
"version": "3.0.11",
"version": "3.0.12",
"engines": {
"node": ">=0.8.0"
},

9
test/benchmark.js
View File

@@ -9,7 +9,7 @@ var args = process.argv.slice(2);
if (!args.length) {
args.push("-mc");
}
args.push("--stats");
args.push("--timings");
var urls = [
"https://code.jquery.com/jquery-3.2.1.js",
"https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.4/angular.js",
@@ -29,12 +29,7 @@ function done() {
var info = results[url];
console.log();
console.log(url);
var elapsed = 0;
console.log(info.log.replace(/Elapsed: ([0-9]+)\s*/g, function(match, time) {
elapsed += 1e-3 * parseInt(time);
return "";
}));
console.log("Run-time:", elapsed.toFixed(3), "s");
console.log(info.log);
console.log("Original:", info.input, "bytes");
console.log("Uglified:", info.output, "bytes");
console.log("SHA1 sum:", info.sha1);

87
test/compress/dead-code.js
View File

@@ -31,7 +31,7 @@ dead_code_2_should_warn: {
function f() {
g();
x = 10;
throw "foo";
throw new Error("foo");
// completely discarding the `if` would introduce some
// bugs. UglifyJS v1 doesn't deal with this issue; in v2
// we copy any declarations to the upper scope.
@@ -46,16 +46,60 @@ dead_code_2_should_warn: {
})();
}
}
f();
}
expect: {
function f() {
g();
x = 10;
throw "foo";
throw new Error("foo");
var x;
function g(){};
}
f();
}
expect_stdout: true
node_version: "<=4"
}
dead_code_2_should_warn_strict: {
options = {
dead_code: true
};
input: {
"use strict";
function f() {
g();
x = 10;
throw new Error("foo");
// completely discarding the `if` would introduce some
// bugs. UglifyJS v1 doesn't deal with this issue; in v2
// we copy any declarations to the upper scope.
if (x) {
y();
var x;
function g(){};
// but nested declarations should not be kept.
(function(){
var q;
function y(){};
})();
}
}
f();
}
expect: {
"use strict";
function f() {
g();
x = 10;
throw new Error("foo");
var x;
}
f();
}
expect_stdout: true
node_version: "=4"
}
dead_code_constant_boolean_should_warn_more: {
@@ -78,6 +122,7 @@ dead_code_constant_boolean_should_warn_more: {
foo();
var moo;
}
bar();
}
expect: {
var foo;
@@ -86,8 +131,46 @@ dead_code_constant_boolean_should_warn_more: {
// as for the for, it should keep:
var x = 10, y;
var moo;
bar();
}
expect_stdout: true
node_version: "<=4"
}
dead_code_constant_boolean_should_warn_more_strict: {
options = {
dead_code : true,
loops : true,
booleans : true,
conditionals : true,
evaluate : true,
side_effects : true,
};
input: {
"use strict";
while (!((foo && bar) || (x + "0"))) {
console.log("unreachable");
var foo;
function bar() {}
}
for (var x = 10, y; x && (y || x) && (!typeof x); ++x) {
asdf();
foo();
var moo;
}
bar();
}
expect: {
"use strict";
var foo;
// nothing for the while
// as for the for, it should keep:
var x = 10, y;
var moo;
bar();
}
expect_stdout: true
node_version: ">=4"
}
dead_code_block_decls_die: {

78
test/compress/functions.js
View File

@@ -167,3 +167,81 @@ function_returning_constant_literal: {
}
expect_stdout: "Hello there"
}
hoist_funs: {
options = {
hoist_funs: true,
}
input: {
console.log(1, typeof f, typeof g);
if (console.log(2, typeof f, typeof g))
console.log(3, typeof f, typeof g);
else {
console.log(4, typeof f, typeof g);
function f() {}
console.log(5, typeof f, typeof g);
}
function g() {}
console.log(6, typeof f, typeof g);
}
expect: {
function f() {}
function g() {}
console.log(1, typeof f, typeof g);
if (console.log(2, typeof f, typeof g))
console.log(3, typeof f, typeof g);
else {
console.log(4, typeof f, typeof g);
console.log(5, typeof f, typeof g);
}
console.log(6, typeof f, typeof g);
}
expect_stdout: [
"1 'function' 'function'",
"2 'function' 'function'",
"4 'function' 'function'",
"5 'function' 'function'",
"6 'function' 'function'",
]
node_version: "<=4"
}
hoist_funs_strict: {
options = {
hoist_funs: true,
}
input: {
"use strict";
console.log(1, typeof f, typeof g);
if (console.log(2, typeof f, typeof g))
console.log(3, typeof f, typeof g);
else {
console.log(4, typeof f, typeof g);
function f() {}
console.log(5, typeof f, typeof g);
}
function g() {}
console.log(6, typeof f, typeof g);
}
expect: {
"use strict";
function g() {}
console.log(1, typeof f, typeof g);
if (console.log(2, typeof f, typeof g))
console.log(3, typeof f, typeof g);
else {
console.log(4, typeof f, typeof g);
function f() {}
console.log(5, typeof f, typeof g);
}
console.log(6, typeof f, typeof g);
}
expect_stdout: [
"1 'undefined' 'function'",
"2 'undefined' 'function'",
"4 'function' 'function'",
"5 'function' 'function'",
"6 'undefined' 'function'",
]
node_version: "=4"
}

134
test/compress/issue-1034.js
View File

@@ -116,3 +116,137 @@ non_hoisted_function_after_return_2b: {
"WARN: Dropping unreachable code [test/compress/issue-1034.js:101,12]",
]
}
non_hoisted_function_after_return_strict: {
options = {
hoist_funs: false, dead_code: true, conditionals: true, comparisons: true,
evaluate: true, booleans: true, loops: true, unused: true, keep_fargs: true,
if_return: true, join_vars: true, cascade: true, side_effects: true
}
input: {
"use strict";
function foo(x) {
if (x) {
return bar();
not_called1();
} else {
return baz();
not_called2();
}
function bar() { return 7; }
return not_reached;
function UnusedFunction() {}
function baz() { return 8; }
}
console.log(foo(0), foo(1));
}
expect: {
"use strict";
function foo(x) {
return x ? bar() : baz();
function bar() { return 7 }
function baz() { return 8 }
}
console.log(foo(0), foo(1));
}
expect_stdout: "8 7"
expect_warnings: [
'WARN: Dropping unreachable code [test/compress/issue-1034.js:131,16]',
"WARN: Dropping unreachable code [test/compress/issue-1034.js:134,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:137,12]",
"WARN: Dropping unused function UnusedFunction [test/compress/issue-1034.js:138,21]"
]
}
non_hoisted_function_after_return_2a_strict: {
options = {
hoist_funs: false, dead_code: true, conditionals: true, comparisons: true,
evaluate: true, booleans: true, loops: true, unused: true, keep_fargs: true,
if_return: true, join_vars: true, cascade: true, side_effects: true,
collapse_vars: false, passes: 2, warnings: "verbose"
}
input: {
"use strict";
function foo(x) {
if (x) {
return bar(1);
var a = not_called(1);
} else {
return bar(2);
var b = not_called(2);
}
var c = bar(3);
function bar(x) { return 7 - x; }
function nope() {}
return b || c;
}
console.log(foo(0), foo(1));
}
expect: {
"use strict";
function foo(x) {
return bar(x ? 1 : 2);
function bar(x) {
return 7 - x;
}
}
console.log(foo(0), foo(1));
}
expect_stdout: "5 6"
expect_warnings: [
"WARN: Dropping unreachable code [test/compress/issue-1034.js:173,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:173,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:176,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:176,16]",
"WARN: Dropping unused variable a [test/compress/issue-1034.js:173,20]",
"WARN: Dropping unused function nope [test/compress/issue-1034.js:180,21]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:178,12]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:178,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:181,12]",
"WARN: Dropping unused variable b [test/compress/issue-1034.js:176,20]",
"WARN: Dropping unused variable c [test/compress/issue-1034.js:178,16]",
]
}
non_hoisted_function_after_return_2b_strict: {
options = {
hoist_funs: false, dead_code: true, conditionals: true, comparisons: true,
evaluate: true, booleans: true, loops: true, unused: true, keep_fargs: true,
if_return: true, join_vars: true, cascade: true, side_effects: true,
collapse_vars: false
}
input: {
"use strict";
function foo(x) {
if (x) {
return bar(1);
} else {
return bar(2);
var b;
}
var c = bar(3);
function bar(x) {
return 7 - x;
}
return b || c;
}
console.log(foo(0), foo(1));
}
expect: {
"use strict";
function foo(x) {
return bar(x ? 1 : 2);
function bar(x) { return 7 - x; }
}
console.log(foo(0), foo(1));
}
expect_stdout: "5 6"
expect_warnings: [
// duplicate warnings no longer emitted
"WARN: Dropping unreachable code [test/compress/issue-1034.js:225,16]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:225,16]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:227,12]",
"WARN: Declarations in unreachable code! [test/compress/issue-1034.js:227,12]",
"WARN: Dropping unreachable code [test/compress/issue-1034.js:231,12]",
]
}

88
test/compress/issue-1052.js
View File

@@ -1,90 +1,91 @@
multiple_functions: {
options = { if_return: true, hoist_funs: false };
options = {
hoist_funs: false,
if_return: true,
}
input: {
( function() {
if ( !window ) {
return;
}
function f() {}
function g() {}
} )();
}
expect: {
( function() {
function f() {}
function g() {}
// NOTE: other compression steps will reduce this
// down to just `window`.
if ( window );
function f() {}
function g() {}
} )();
}
}
single_function: {
options = { if_return: true, hoist_funs: false };
options = {
hoist_funs: false,
if_return: true,
}
input: {
( function() {
if ( !window ) {
return;
}
function f() {}
} )();
}
expect: {
( function() {
function f() {}
if ( window );
function f() {}
} )();
}
}
deeply_nested: {
options = { if_return: true, hoist_funs: false };
options = {
hoist_funs: false,
if_return: true,
}
input: {
( function() {
if ( !window ) {
return;
}
function f() {}
function g() {}
if ( !document ) {
return;
}
function h() {}
} )();
}
expect: {
( function() {
function f() {}
function g() {}
function h() {}
// NOTE: other compression steps will reduce this
// down to just `window`.
if ( window )
if (document);
function f() {}
function g() {}
function h() {}
} )();
}
}
not_hoisted_when_already_nested: {
options = { if_return: true, hoist_funs: false };
options = {
hoist_funs: false,
if_return: true,
}
input: {
( function() {
if ( !window ) {
return;
}
if ( foo ) function f() {}
} )();
}
expect: {
@@ -94,3 +95,48 @@ not_hoisted_when_already_nested: {
} )();
}
}
defun_if_return: {
options = {
hoist_funs: false,
if_return: true,
}
input: {
function e() {
function f() {}
if (!window) return;
else function g() {}
function h() {}
}
}
expect: {
function e() {
function f() {}
if (window) function g() {}
function h() {}
}
}
}
defun_hoist_funs: {
options = {
hoist_funs: true,
if_return: true,
}
input: {
function e() {
function f() {}
if (!window) return;
else function g() {}
function h() {}
}
}
expect: {
function e() {
function f() {}
function g() {}
function h() {}
!window;
}
}
}

2
test/jetstream.js
View File

@@ -14,7 +14,7 @@ if (typeof phantom == "undefined") {
if (!args.length) {
args.push("-mc");
}
args.push("--stats");
args.push("--timings");
var child_process = require("child_process");
try {
require("phantomjs-prebuilt");

2
tools/node.js
View File

@@ -61,5 +61,5 @@ function describe_ast() {
}
};
doitem(AST_Node);
return out + "";
return out + "\n";
}