Merge branch 'master' into harmony-v3.1.6

This commit is contained in:
alexlamsl
2017-10-29 13:23:39 +08:00
12 changed files with 1364 additions and 224 deletions

View File

@@ -649,6 +649,12 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
- `hoist_funs` (default: `true`) -- hoist function declarations
- `hoist_props` (default: `false`) -- hoist properties from constant object and
array literals into regular variables subject to a set of constraints. For example:
`var o={p:1, q:2}; f(o.p, o.q);` is converted to `f(1, 2);`. Note: `hoist_props`
works best with `mangle` enabled, the `compress` option `passes` set to `2` or higher,
and the `compress` option `toplevel` enabled.
- `hoist_vars` (default: `false`) -- hoist `var` declarations (this is `false`
by default because it seems to increase the size of the output in general)

View File

@@ -63,6 +63,7 @@ function Compressor(options, false_by_default) {
expression : false,
global_defs : {},
hoist_funs : !false_by_default,
hoist_props : false,
hoist_vars : false,
ie8 : false,
if_return : !false_by_default,
@@ -196,6 +197,7 @@ merge(Compressor.prototype, {
if (node._squeezed) return node;
var was_scope = false;
if (node instanceof AST_Scope) {
node = node.hoist_properties(this);
node = node.hoist_declarations(this);
was_scope = true;
}
@@ -318,7 +320,7 @@ merge(Compressor.prototype, {
d.references.push(node);
if (d.fixed === undefined || !safe_to_read(d) || d.single_use == "m") {
d.fixed = false;
} else {
} else if (d.fixed) {
var value = node.fixed_value();
if (unused && !compressor.exposed(d)) {
d.single_use = value
@@ -327,20 +329,14 @@ merge(Compressor.prototype, {
&& d.scope === node.scope
&& value.is_constant_expression();
}
if (is_modified(node, 0, is_immutable(value))) {
if (is_modified(node, value, 0, is_immutable(value))) {
if (d.single_use) {
d.single_use = "m";
} else {
d.fixed = false;
}
} else {
var parent = tw.parent();
if (parent instanceof AST_Assign && parent.operator == "=" && node === parent.right
|| parent instanceof AST_Call && node !== parent.expression
|| parent instanceof AST_Return && node === parent.value && node.scope !== d.scope
|| parent instanceof AST_VarDef && node === parent.value) {
d.escaped = true;
}
mark_escaped(d, node, value, 0);
}
}
}
@@ -569,6 +565,7 @@ merge(Compressor.prototype, {
}
function reset_def(def) {
def.direct_access = false;
def.escaped = false;
if (def.scope.uses_eval) {
def.fixed = false;
@@ -586,18 +583,61 @@ merge(Compressor.prototype, {
return value && (value.is_constant() || value instanceof AST_Lambda);
}
function is_modified(node, level, immutable) {
function read_property(obj, key) {
if (key instanceof AST_Constant) key = key.getValue();
if (key instanceof AST_Node) return null;
var value;
if (obj instanceof AST_Array) {
var elements = obj.elements;
if (key == "length") return make_node_from_constant(elements.length, obj);
if (typeof key == "number" && key in elements) value = elements[key];
} else if (obj instanceof AST_Object) {
var props = obj.properties;
for (var i = props.length; --i >= 0;) {
var prop = props[i];
if (!(prop instanceof AST_ObjectKeyVal)) return;
if (!value && props[i].key === key) value = props[i].value;
}
}
return value instanceof AST_SymbolRef && value.fixed_value() || value;
}
function is_modified(node, value, level, immutable) {
var parent = tw.parent(level);
if (is_lhs(node, parent)
|| !immutable && parent instanceof AST_Call && parent.expression === node) {
|| !immutable
&& parent instanceof AST_Call
&& parent.expression === node
&& (!(value instanceof AST_Function) || value.contains_this())) {
return true;
} else if (parent instanceof AST_Array || parent instanceof AST_Object) {
return is_modified(parent, parent, level + 1);
} else if (parent instanceof AST_PropAccess && parent.expression === node) {
return !immutable && is_modified(parent, level + 1);
return !immutable && is_modified(parent, read_property(value, parent.property), level + 1);
}
}
function mark_escaped(d, node, value, level) {
var parent = tw.parent(level);
if (value instanceof AST_Constant || value instanceof AST_Function) return;
if (parent instanceof AST_Assign && parent.operator == "=" && node === parent.right
|| parent instanceof AST_Call && node !== parent.expression
|| parent instanceof AST_Return && node === parent.value && node.scope !== d.scope
|| parent instanceof AST_VarDef && node === parent.value) {
d.escaped = true;
return;
} else if (parent instanceof AST_Array || parent instanceof AST_Object) {
mark_escaped(d, parent, parent, level + 1);
} else if (parent instanceof AST_PropAccess && node === parent.expression) {
value = read_property(value, parent.property);
mark_escaped(d, parent, value, level + 1);
if (value) return;
}
if (level == 0) d.direct_access = true;
}
});
AST_SymbolRef.DEFMETHOD("fixed_value", function() {
AST_Symbol.DEFMETHOD("fixed_value", function() {
var fixed = this.definition().fixed;
if (!fixed || fixed instanceof AST_Node) return fixed;
return fixed();
@@ -1700,35 +1740,6 @@ merge(Compressor.prototype, {
&& unaryPrefix(this.operator);
}
});
// Obtain the constant value of an expression already known to be constant.
// Result only valid iff this.is_constant() is true.
AST_Node.DEFMETHOD("constant_value", function(compressor){
// Accomodate when option evaluate=false.
if (this instanceof AST_Constant && !(this instanceof AST_RegExp)) {
return this.value;
}
// Accomodate the common constant expressions !0 and -1 when option evaluate=false.
if (this instanceof AST_UnaryPrefix
&& this.expression instanceof AST_Constant) switch (this.operator) {
case "!":
return !this.expression.value;
case "~":
return ~this.expression.value;
case "-":
return -this.expression.value;
case "+":
return +this.expression.value;
default:
throw new Error(string_template("Cannot evaluate unary expression {value}", {
value: this.print_to_string()
}));
}
var result = this.evaluate(compressor);
if (result !== this) {
return result;
}
throw new Error(string_template("Cannot evaluate constant [{file}:{line},{col}]", this.start));
});
def(AST_Statement, function(){
throw new Error(string_template("Cannot evaluate a statement [{file}:{line},{col}]", this.start));
});
@@ -1752,6 +1763,7 @@ merge(Compressor.prototype, {
var elements = [];
for (var i = 0, len = this.elements.length; i < len; i++) {
var element = this.elements[i];
if (element instanceof AST_Function) continue;
var value = ev(element, compressor);
if (element === value) return this;
elements.push(value);
@@ -1776,6 +1788,7 @@ merge(Compressor.prototype, {
if (typeof Object.prototype[key] === 'function') {
return this;
}
if (prop.value instanceof AST_Function) continue;
val[key] = ev(prop.value, compressor);
if (val[key] === prop.value) return this;
}
@@ -2517,9 +2530,8 @@ merge(Compressor.prototype, {
return node;
}
var parent = tt.parent();
if (node instanceof AST_Definitions
&& !(parent instanceof AST_ForIn && parent.init === node)
&& (drop_vars || !(parent instanceof AST_Toplevel) && !(node instanceof AST_Var))) {
if (node instanceof AST_Definitions && !(parent instanceof AST_ForIn && parent.init === node)) {
var drop_block = !(parent instanceof AST_Toplevel) && !(node instanceof AST_Var);
// place uninitialized names at the start
var body = [], head = [], tail = [];
// for unused names whose initialization has
@@ -2530,8 +2542,8 @@ merge(Compressor.prototype, {
if (def.value) def.value = def.value.transform(tt);
if (def.name instanceof AST_Destructuring) return tail.push(def);
var sym = def.name.definition();
if (!drop_vars && sym.global) return tail.push(def);
if (sym.id in in_use_ids) {
if (drop_block && sym.global) return tail.push(def);
if (!(drop_vars || drop_block) || sym.id in in_use_ids) {
if (def.name instanceof AST_SymbolVar) {
var var_defs = var_defs_by_id.get(sym.id);
if (var_defs.length > 1 && !def.value) {
@@ -2810,6 +2822,71 @@ merge(Compressor.prototype, {
return self;
});
AST_Scope.DEFMETHOD("hoist_properties", function(compressor){
var self = this;
if (!compressor.option("hoist_props") || compressor.has_directive("use asm")) return self;
var defs_by_id = Object.create(null);
var var_names = Object.create(null);
self.enclosed.forEach(function(def) {
var_names[def.name] = true;
});
self.variables.each(function(def, name) {
var_names[name] = true;
});
return self.transform(new TreeTransformer(function(node) {
if (node instanceof AST_VarDef) {
var sym = node.name, def, value;
if (sym.scope === self
&& !(def = sym.definition()).escaped
&& !def.single_use
&& !def.direct_access
&& (value = sym.fixed_value()) === node.value
&& value instanceof AST_Object) {
var defs = new Dictionary();
var assignments = [];
value.properties.forEach(function(prop) {
assignments.push(make_node(AST_VarDef, node, {
name: make_sym(prop.key),
value: prop.value
}));
});
defs_by_id[def.id] = defs;
return MAP.splice(assignments);
}
}
if (node instanceof AST_PropAccess && node.expression instanceof AST_SymbolRef) {
var defs = defs_by_id[node.expression.definition().id];
if (defs) {
var key = node.property;
if (key instanceof AST_Node) key = key.getValue();
var def = defs.get(key);
var sym = make_node(AST_SymbolRef, node, {
name: def.name,
scope: node.expression.scope,
thedef: def
});
sym.reference({});
return sym;
}
}
function make_sym(key) {
var prefix = sym.name + "_" + key.toString().replace(/[^a-z_$]+/ig, "_");
var name = prefix;
for (var i = 0; var_names[name]; i++) name = prefix + "$" + i;
var new_var = make_node(sym.CTOR, sym, {
name: name,
scope: self
});
var def = self.def_variable(new_var);
defs.set(key, def);
self.enclosed.push(def);
var_names[name] = true;
return new_var;
}
}));
});
// drop_side_effect_free()
// remove side-effect-free parts which only affects return value
(function(def){
@@ -3963,6 +4040,11 @@ merge(Compressor.prototype, {
});
var commutativeOperators = makePredicate("== === != !== * & | ^");
function is_object(node) {
return node instanceof AST_Array
|| node instanceof AST_Lambda
|| node instanceof AST_Object;
}
OPT(AST_Binary, function(self, compressor){
function reversible() {
@@ -3998,7 +4080,8 @@ merge(Compressor.prototype, {
case "!==":
if ((self.left.is_string(compressor) && self.right.is_string(compressor)) ||
(self.left.is_number(compressor) && self.right.is_number(compressor)) ||
(self.left.is_boolean() && self.right.is_boolean())) {
(self.left.is_boolean() && self.right.is_boolean()) ||
self.left.equivalent_to(self.right)) {
self.operator = self.operator.substr(0, 2);
}
// XXX: intentionally falling down to the next case
@@ -4018,6 +4101,13 @@ merge(Compressor.prototype, {
if (self.operator.length == 2) self.operator += "=";
}
}
// obj !== obj => false
else if (self.left instanceof AST_SymbolRef
&& self.right instanceof AST_SymbolRef
&& self.left.definition() === self.right.definition()
&& is_object(self.left.fixed_value())) {
return make_node(self.operator[0] == "=" ? AST_True : AST_False, self);
}
break;
}
if (compressor.option("booleans") && self.operator == "+" && compressor.in_boolean_context()) {
@@ -4713,19 +4803,69 @@ merge(Compressor.prototype, {
});
OPT(AST_Sub, function(self, compressor){
var expr = self.expression;
var prop = self.property;
if (prop instanceof AST_String && compressor.option("properties")) {
prop = prop.getValue();
if (is_identifier_string(prop)) {
if (compressor.option("properties")) {
var key = prop.evaluate(compressor);
if (key !== prop) {
var property = "" + key;
if (is_identifier_string(property)
&& property.length <= prop.print_to_string().length + 1) {
return make_node(AST_Dot, self, {
expression : self.expression,
property : prop
expression: expr,
property: property
}).optimize(compressor);
}
var v = parseFloat(prop);
if (!isNaN(v) && v.toString() == prop) {
self.property = make_node(AST_Number, self.property, {
value: v
if (!(prop instanceof AST_Number)) {
var value = parseFloat(property);
if (value.toString() == property) {
prop = self.property = make_node(AST_Number, prop, {
value: value
});
}
}
}
}
if (is_lhs(self, compressor.parent())) return self;
if (compressor.option("properties") && key !== prop) {
var node = self.flatten_object(property);
if (node) {
expr = self.expression = node.expression;
prop = self.property = node.property;
}
}
if (compressor.option("properties") && compressor.option("side_effects")
&& prop instanceof AST_Number && expr instanceof AST_Array) {
var index = prop.getValue();
var elements = expr.elements;
if (index in elements) {
var flatten = true;
var values = [];
for (var i = elements.length; --i > index;) {
var value = elements[i].drop_side_effect_free(compressor);
if (value) {
values.unshift(value);
if (flatten && value.has_side_effects(compressor)) flatten = false;
}
}
var retValue = elements[index];
retValue = retValue instanceof AST_Hole ? make_node(AST_Undefined, retValue) : retValue;
if (!flatten) values.unshift(retValue);
while (--i >= 0) {
var value = elements[i].drop_side_effect_free(compressor);
if (value) values.unshift(value);
else index--;
}
if (flatten) {
values.push(retValue);
return make_sequence(self, values).optimize(compressor);
} else return make_node(AST_Sub, self, {
expression: make_node(AST_Array, expr, {
elements: values
}),
property: make_node(AST_Number, prop, {
value: index
})
});
}
}
@@ -4748,30 +4888,38 @@ merge(Compressor.prototype, {
return result;
});
AST_PropAccess.DEFMETHOD("flatten_object", function(key) {
var expr = this.expression;
if (expr instanceof AST_Object) {
var props = expr.properties;
for (var i = props.length; --i >= 0;) {
var prop = props[i];
if ("" + prop.key == key) {
if (!all(props, function(prop) {
return prop instanceof AST_ObjectKeyVal;
})) break;
var value = prop.value;
if (value instanceof AST_Function && value.contains_this()) break;
return make_node(AST_Sub, this, {
expression: make_node(AST_Array, expr, {
elements: props.map(function(prop) {
return prop.value;
})
}),
property: make_node(AST_Number, this, {
value: i
})
});
}
}
}
});
OPT(AST_Dot, function(self, compressor){
var def = self.resolve_defines(compressor);
if (def) {
return def.optimize(compressor);
}
if (compressor.option("unsafe") && self.expression instanceof AST_Object) {
var values = self.expression.properties;
for (var i = values.length; --i >= 0;) {
var key = values[i].key;
if ((key instanceof AST_SymbolMethod ? key.name : key) === self.property) {
var value = values[i].value;
if (key instanceof AST_SymbolMethod) {
if (values[i].is_generator) break;
value = make_node(AST_Function, value, value);
}
if (value instanceof AST_Function ? !value.contains_this() : !value.has_side_effects(compressor)) {
var obj = self.expression.clone();
obj.properties = obj.properties.slice();
obj.properties.splice(i, 1);
return make_sequence(self, [ obj, value ]).optimize(compressor);
}
}
}
}
if (compressor.option("unsafe_proto")
&& self.expression instanceof AST_Dot
&& self.expression.property == "prototype") {
@@ -4794,6 +4942,11 @@ merge(Compressor.prototype, {
break;
}
}
if (is_lhs(self, compressor.parent())) return self;
if (compressor.option("properties")) {
var node = self.flatten_object(self.property);
if (node) return node.optimize(compressor);
}
var ev = self.evaluate(compressor);
if (ev !== self) {
ev = make_node_from_constant(ev, self).optimize(compressor);

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": "3.1.5",
"version": "3.1.6",
"engines": {
"node": ">=0.8.0"
},

View File

@@ -203,50 +203,110 @@ constant_join_3: {
for_loop: {
options = {
unsafe : true,
unused : true,
evaluate : true,
reduce_vars : true
evaluate: true,
reduce_vars: true,
unsafe: true,
unused: true,
};
input: {
function f0() {
var a = [1, 2, 3];
for (var i = 0; i < a.length; i++) {
console.log(a[i]);
var b = 0;
for (var i = 0; i < a.length; i++)
b += a[i];
return b;
}
}
function f1() {
var a = [1, 2, 3];
for (var i = 0, len = a.length; i < len; i++) {
console.log(a[i]);
var b = 0;
for (var i = 0, len = a.length; i < len; i++)
b += a[i];
return b;
}
}
function f2() {
var a = [1, 2, 3];
for (var i = 0; i < a.length; i++) {
a[i]++;
}
}
}
expect: {
function f0() {
var a = [1, 2, 3];
for (var i = 0; i < 3; i++)
console.log(a[i]);
}
function f1() {
var a = [1, 2, 3];
for (var i = 0; i < 3; i++)
console.log(a[i]);
}
function f2() {
var a = [1, 2, 3];
for (var i = 0; i < a.length; i++)
a[i]++;
return a[2];
}
console.log(f0(), f1(), f2());
}
expect: {
function f0() {
var a = [1, 2, 3];
var b = 0;
for (var i = 0; i < 3; i++)
b += a[i];
return b;
}
function f1() {
var a = [1, 2, 3];
var b = 0;
for (var i = 0; i < 3; i++)
b += a[i];
return b;
}
function f2() {
var a = [1, 2, 3];
for (var i = 0; i < a.length; i++)
a[i]++;
return a[2];
}
console.log(f0(), f1(), f2());
}
expect_stdout: "6 6 4"
}
index: {
options = {
evaluate: true,
reduce_vars: true,
toplevel: true,
unsafe: true,
unused: true,
}
input: {
var a = [ 1, 2 ];
console.log(a[0], a[1]);
}
expect: {
console.log(1, 2);
}
expect_stdout: "1 2"
}
length: {
options = {
evaluate: true,
reduce_vars: true,
toplevel: true,
unsafe: true,
unused: true,
}
input: {
var a = [ 1, 2 ];
console.log(a.length);
}
expect: {
console.log(2);
}
expect_stdout: "2"
}
index_length: {
options = {
evaluate: true,
reduce_vars: true,
toplevel: true,
unsafe: true,
unused: true,
}
input: {
var a = [ 1, 2 ];
console.log(a[0], a.length);
}
expect: {
console.log(1, 2);
}
expect_stdout: "1 2"
}

View File

@@ -2150,7 +2150,7 @@ inner_lvalues: {
console.log(null, a, b);
}
expect: {
var a, b = 10;
var b = 10;
var a = (--b || a || 3).toString(), c = --b + -a;
console.log(null, a, b);
}
@@ -2808,73 +2808,6 @@ issue_2319_3: {
expect_stdout: "true"
}
prop_side_effects_1: {
options = {
collapse_vars: true,
evaluate: true,
pure_getters: "strict",
reduce_vars: true,
toplevel: true,
unsafe: true,
unused: true,
}
input: {
var C = 1;
console.log(C);
var obj = {
bar: function() {
return C + C;
}
};
console.log(obj.bar());
}
expect: {
console.log(1);
console.log({
bar: function() {
return 2;
}
}.bar());
}
expect_stdout: [
"1",
"2",
]
}
prop_side_effects_2: {
options = {
collapse_vars: true,
evaluate: true,
inline: true,
passes: 2,
pure_getters: "strict",
reduce_vars: true,
side_effects: true,
toplevel: true,
unsafe: true,
unused: true,
}
input: {
var C = 1;
console.log(C);
var obj = {
bar: function() {
return C + C;
}
};
console.log(obj.bar());
}
expect: {
console.log(1);
console.log(2);
}
expect_stdout: [
"1",
"2",
]
}
issue_2365: {
options = {
collapse_vars: true,

View File

@@ -74,3 +74,40 @@ dont_change_in_or_instanceof_expressions: {
null instanceof null;
}
}
self_comparison_1: {
options = {
comparisons: true,
}
input: {
a === a;
a !== b;
b.c === a.c;
b.c !== b.c;
}
expect: {
a == a;
a !== b;
b.c === a.c;
b.c != b.c;
}
}
self_comparison_2: {
options = {
comparisons: true,
reduce_vars: true,
toplevel: true,
}
input: {
function f() {}
var o = {};
console.log(f != f, o === o);
}
expect: {
function f() {}
var o = {};
console.log(false, true);
}
expect_stdout: "false true"
}

View File

@@ -480,10 +480,11 @@ unsafe_object_accessor: {
}
}
unsafe_function: {
prop_function: {
options = {
evaluate : true,
unsafe : true
evaluate: true,
properties: true,
side_effects: true,
}
input: {
console.log(
@@ -496,9 +497,9 @@ unsafe_function: {
expect: {
console.log(
({a:{b:1},b:function(){}}) + 1,
({b:function(){}}, {b:1}) + 1,
({a:{b:1}}, function(){}) + 1,
({b:function(){}}, {b:1}).b + 1
({b:1}) + 1,
function(){} + 1,
2
);
}
expect_stdout: true
@@ -724,10 +725,11 @@ unsafe_string_bad_index: {
expect_stdout: true
}
unsafe_prototype_function: {
prototype_function: {
options = {
evaluate : true,
unsafe : true
evaluate: true,
properties: true,
side_effects: true,
}
input: {
var a = ({valueOf: 0}) < 1;
@@ -746,8 +748,8 @@ unsafe_prototype_function: {
var d = ({toString: 0}) + "";
var e = (({valueOf: 0}) + "")[2];
var f = (({toString: 0}) + "")[2];
var g = ({}, 0)();
var h = ({}, 0)();
var g = 0();
var h = 0();
}
}
@@ -1288,3 +1290,40 @@ issue_2231_2: {
}
expect_stdout: true
}
self_comparison_1: {
options = {
evaluate: true,
reduce_vars: true,
toplevel: true,
unsafe: true,
unused: true,
}
input: {
var o = { n: NaN };
console.log(o.n == o.n, o.n === o.n, o.n != o.n, o.n !== o.n, typeof o.n);
}
expect: {
console.log(false, false, true, true, "number");
}
expect_stdout: "false false true true 'number'"
}
self_comparison_2: {
options = {
evaluate: true,
hoist_props: true,
passes: 2,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = { n: NaN };
console.log(o.n == o.n, o.n === o.n, o.n != o.n, o.n !== o.n, typeof o.n);
}
expect: {
console.log(false, false, true, true, "number");
}
expect_stdout: "false false true true 'number'"
}

View File

@@ -151,13 +151,13 @@ issue_1841_2: {
function_returning_constant_literal: {
options = {
reduce_vars: true,
unsafe: true,
toplevel: true,
evaluate: true,
cascade: true,
unused: true,
inline: true,
passes: 2,
properties: true,
reduce_vars: true,
side_effects: true,
toplevel: true,
unused: true,
}
input: {
function greeter() {

View File

@@ -0,0 +1,371 @@
issue_2377_1: {
options = {
evaluate: true,
inline: true,
hoist_props: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var obj = {
foo: 1,
bar: 2,
square: function(x) {
return x * x;
},
cube: function(x) {
return x * x * x;
},
};
console.log(obj.foo, obj.cube(3));
}
expect: {
var obj_foo = 1, obj_cube = function(x) {
return x * x * x;
};
console.log(obj_foo, obj_cube(3));
}
expect_stdout: "1 27"
}
issue_2377_2: {
options = {
evaluate: true,
inline: true,
hoist_props: true,
passes: 2,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var obj = {
foo: 1,
bar: 2,
square: function(x) {
return x * x;
},
cube: function(x) {
return x * x * x;
},
};
console.log(obj.foo, obj.cube(3));
}
expect: {
console.log(1, function(x) {
return x * x * x;
}(3));
}
expect_stdout: "1 27"
}
issue_2377_3: {
options = {
evaluate: true,
inline: true,
hoist_props: true,
passes: 3,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var obj = {
foo: 1,
bar: 2,
square: function(x) {
return x * x;
},
cube: function(x) {
return x * x * x;
},
};
console.log(obj.foo, obj.cube(3));
}
expect: {
console.log(1, 27);
}
expect_stdout: "1 27"
}
direct_access_1: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var a = 0;
var obj = {
a: 1,
b: 2,
};
for (var k in obj) a++;
console.log(a, obj.a);
}
expect: {
var a = 0;
var obj = {
a: 1,
b: 2,
};
for (var k in obj) a++;
console.log(a, obj.a);
}
expect_stdout: "2 1"
}
direct_access_2: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = { a: 1 };
var f = function(k) {
if (o[k]) return "PASS";
};
console.log(f("a"));
}
expect: {
var o = { a: 1 };
console.log(function(k) {
if (o[k]) return "PASS";
}("a"));
}
expect_stdout: "PASS"
}
direct_access_3: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = { a: 1 };
o.b;
console.log(o.a);
}
expect: {
var o = { a: 1 };
o.b;
console.log(o.a);
}
expect_stdout: "1"
}
single_use: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var obj = {
bar: function() {
return 42;
},
};
console.log(obj.bar());
}
expect: {
console.log({
bar: function() {
return 42;
},
}.bar());
}
}
name_collision_1: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
}
input: {
var obj_foo = 1;
var obj_bar = 2;
function f() {
var obj = {
foo: 3,
bar: 4,
"b-r": 5,
"b+r": 6,
"b!r": 7,
};
console.log(obj_foo, obj.foo, obj.bar, obj["b-r"], obj["b+r"], obj["b!r"]);
}
f();
}
expect: {
var obj_foo = 1;
var obj_bar = 2;
function f() {
var obj_foo$0 = 3,
obj_bar = 4,
obj_b_r = 5,
obj_b_r$0 = 6,
obj_b_r$1 = 7;
console.log(obj_foo, obj_foo$0, obj_bar, obj_b_r, obj_b_r$0, obj_b_r$1);
}
f();
}
expect_stdout: "1 3 4 5 6 7"
}
name_collision_2: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
}
input: {
var o = {
p: 1,
0: function(x) {
return x;
},
1: function(x) {
return x + 1;
}
}, o__$0 = 2, o__$1 = 3;
console.log(o.p === o.p, o[0](4), o[1](5), o__$0, o__$1);
}
expect: {
var o_p = 1,
o__ = function(x) {
return x;
},
o__$2 = function(x) {
return x + 1;
},
o__$0 = 2,
o__$1 = 3;
console.log(o_p === o_p, o__(4), o__$2(5), o__$0, o__$1);
}
expect_stdout: "true 4 6 2 3"
}
name_collision_3: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
}
input: {
var o = {
p: 1,
0: function(x) {
return x;
},
1: function(x) {
return x + 1;
}
}, o__$0 = 2, o__$1 = 3;
console.log(o.p === o.p, o[0](4), o[1](5));
}
expect: {
var o_p = 1,
o__ = function(x) {
return x;
},
o__$2 = function(x) {
return x + 1;
},
o__$0 = 2,
o__$1 = 3;
console.log(o_p === o_p, o__(4), o__$2(5));
}
expect_stdout: "true 4 6"
}
contains_this_1: {
options = {
evaluate: true,
hoist_props: true,
inline: true,
passes: 2,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = {
u: function() {
return this === this;
},
p: 1
};
console.log(o.p, o.p);
}
expect: {
console.log(1, 1);
}
expect_stdout: "1 1"
}
contains_this_2: {
options = {
evaluate: true,
hoist_props: true,
inline: true,
passes: 2,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = {
u: function() {
return this === this;
},
p: 1
};
console.log(o.p, o.p, o.u);
}
expect: {
console.log(1, 1, function() {
return this === this;
});
}
expect_stdout: true
}
contains_this_3: {
options = {
evaluate: true,
hoist_props: true,
inline: true,
passes: 2,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = {
u: function() {
return this === this;
},
p: 1
};
console.log(o.p, o.p, o.u());
}
expect: {
var o = {
u: function() {
return this === this;
},
p: 1
};
console.log(o.p, o.p, o.u());
}
expect_stdout: "1 1 true"
}

View File

@@ -1,7 +1,8 @@
keep_properties: {
options = {
properties: false
};
evaluate: true,
properties: false,
}
input: {
a["foo"] = "bar";
}
@@ -12,6 +13,7 @@ keep_properties: {
dot_properties: {
options = {
evaluate: true,
properties: true,
}
beautify = {
@@ -37,6 +39,7 @@ dot_properties: {
dot_properties_es5: {
options = {
evaluate: true,
properties: true,
}
beautify = {
@@ -61,8 +64,8 @@ dot_properties_es5: {
sub_properties: {
options = {
evaluate: true,
properties: true
};
properties: true,
}
input: {
a[0] = 0;
a["0"] = 1;
@@ -81,18 +84,18 @@ sub_properties: {
a[3.14] = 3;
a.if = 4;
a["foo bar"] = 5;
a[NaN] = 6;
a[null] = 7;
a.NaN = 6;
a.null = 7;
a[void 0] = 8;
}
}
evaluate_array_length: {
options = {
evaluate: true,
properties: true,
unsafe: true,
evaluate: true
};
}
input: {
a = [1, 2, 3].length;
a = [1, 2, 3].join()["len" + "gth"];
@@ -109,10 +112,10 @@ evaluate_array_length: {
evaluate_string_length: {
options = {
evaluate: true,
properties: true,
unsafe: true,
evaluate: true
};
}
input: {
a = "foo".length;
a = ("foo" + "bar")["len" + "gth"];
@@ -151,7 +154,8 @@ mangle_properties: {
mangle_unquoted_properties: {
options = {
properties: false
evaluate: true,
properties: false,
}
mangle = {
properties: {
@@ -250,7 +254,8 @@ mangle_debug_suffix: {
mangle_debug_suffix_keep_quoted: {
options = {
properties: false
evaluate: true,
properties: false,
}
mangle = {
properties: {
@@ -679,8 +684,8 @@ accessor_this: {
issue_2208_1: {
options = {
inline: true,
properties: true,
side_effects: true,
unsafe: true,
}
input: {
console.log({
@@ -698,8 +703,8 @@ issue_2208_1: {
issue_2208_2: {
options = {
inline: true,
properties: true,
side_effects: true,
unsafe: true,
}
input: {
console.log({
@@ -723,8 +728,8 @@ issue_2208_2: {
issue_2208_3: {
options = {
inline: true,
properties: true,
side_effects: true,
unsafe: true,
}
input: {
a = 42;
@@ -748,8 +753,8 @@ issue_2208_3: {
issue_2208_4: {
options = {
inline: true,
properties: true,
side_effects: true,
unsafe: true,
}
input: {
function foo() {}
@@ -772,8 +777,8 @@ issue_2208_4: {
issue_2208_5: {
options = {
inline: true,
properties: true,
side_effects: true,
unsafe: true,
}
input: {
console.log({
@@ -1052,3 +1057,200 @@ unsafe_methods_regex: {
]
node_version: ">=6"
}
lhs_prop_1: {
options = {
evaluate: true,
properties: true,
}
input: {
console.log(++{
a: 1
}.a);
}
expect: {
console.log(++{
a: 1
}.a);
}
expect_stdout: "2"
}
lhs_prop_2: {
options = {
evaluate: true,
inline: true,
properties: true,
reduce_vars: true,
side_effects: true,
unused: true,
}
input: {
[1][0] = 42;
(function(a) {
a.b = "g";
})("abc");
(function(a) {
a[2] = "g";
})("def");
(function(a) {
a[""] = "g";
})("ghi");
}
expect: {
[1][0] = 42;
"abc".b = "g";
"def"[2] = "g";
"ghi"[""] = "g";
}
}
literal_duplicate_key_side_effects: {
options = {
properties: true,
side_effects: true,
}
input: {
console.log({
a: "FAIL",
a: console.log ? "PASS" : "FAIL"
}.a);
}
expect: {
console.log(console.log ? "PASS" : "FAIL");
}
expect_stdout: "PASS"
}
prop_side_effects_1: {
options = {
evaluate: true,
inline: true,
properties: true,
reduce_vars: true,
side_effects: true,
toplevel: true,
unused: true,
}
input: {
var C = 1;
console.log(C);
var obj = {
bar: function() {
return C + C;
}
};
console.log(obj.bar());
}
expect: {
console.log(1);
var obj = {
bar: function() {
return 2;
}
};
console.log(obj.bar());
}
expect_stdout: [
"1",
"2",
]
}
prop_side_effects_2: {
options = {
evaluate: true,
inline: true,
passes: 2,
properties: true,
reduce_vars: true,
side_effects: true,
toplevel: true,
unused: true,
}
input: {
var C = 1;
console.log(C);
var obj = {
"": function() {
return C + C;
}
};
console.log(obj[""]());
}
expect: {
console.log(1);
console.log(2);
}
expect_stdout: [
"1",
"2",
]
}
accessor_1: {
options = {
properties: true,
}
input: {
console.log({
a: "FAIL",
get a() {
return "PASS";
}
}.a);
}
expect: {
console.log({
a: "FAIL",
get a() {
return "PASS";
}
}.a);
}
expect_stdout: "PASS"
node_version: ">=4"
}
accessor_2: {
options = {
properties: true,
}
input: {
console.log({
get a() {
return "PASS";
},
set a(v) {},
a: "FAIL"
}.a);
}
expect: {
console.log({
get a() {
return "PASS";
},
set a(v) {},
a: "FAIL"
}.a);
}
expect_stdout: true
}
array_hole: {
options = {
properties: true,
side_effects: true,
}
input: {
console.log(
[ 1, 2, , 3][1],
[ 1, 2, , 3][2],
[ 1, 2, , 3][3]
);
}
expect: {
console.log(2, void 0, 3);
}
expect_stdout: "2 undefined 3"
}

View File

@@ -211,7 +211,116 @@ unsafe_evaluate: {
}
}
unsafe_evaluate_object: {
unsafe_evaluate_side_effect_free_1: {
options = {
evaluate: true,
reduce_vars: true,
unsafe: true,
unused: true,
}
input: {
console.log(function(){ var o={p:1}; console.log(o.p); return o.p; }());
console.log(function(){ var o={p:2}; console.log(o.p); return o; }());
console.log(function(){ var o={p:3}; console.log([o][0].p); return o.p; }());
}
expect: {
console.log(function(){ console.log(1); return 1; }());
console.log(function(){ var o={p:2}; console.log(2); return o; }());
console.log(function(){ console.log(3); return 3; }());
}
expect_stdout: true
}
unsafe_evaluate_side_effect_free_2: {
options = {
collapse_vars: true,
evaluate: true,
passes: 2,
pure_getters: "strict",
reduce_vars: true,
unsafe: true,
unused: true,
}
input: {
console.log(function(){ var o={p:1},a=[o]; console.log(a[0].p); return o.p; }());
}
expect: {
console.log(function(){ console.log(1); return 1; }());
}
expect_stdout: true
}
unsafe_evaluate_escaped: {
options = {
evaluate: true,
reduce_vars: true,
unsafe: true,
unused: true,
}
input: {
console.log(function(){ var o={p:1}; console.log(o, o.p); return o.p; }());
console.log(function(){ var o={p:2}; console.log(o.p, o); return o.p; }());
console.log(function(){ var o={p:3},a=[o]; console.log(a[0].p++); return o.p; }());
}
expect: {
console.log(function(){ var o={p:1}; console.log(o, o.p); return o.p; }());
console.log(function(){ var o={p:2}; console.log(o.p, o); return o.p; }());
console.log(function(){ var o={p:3},a=[o]; console.log(a[0].p++); return o.p; }());
}
expect_stdout: true
}
unsafe_evaluate_modified: {
options = {
evaluate: true,
reduce_vars: true,
unsafe: true,
unused: true,
}
input: {
console.log(function(){ var o={p:1}; o.p++; console.log(o.p); return o.p; }());
console.log(function(){ var o={p:2}; --o.p; console.log(o.p); return o.p; }());
console.log(function(){ var o={p:3}; o.p += ""; console.log(o.p); return o.p; }());
console.log(function(){ var o={p:4}; o = {}; console.log(o.p); return o.p; }());
console.log(function(){ var o={p:5}; o.p = -9; console.log(o.p); return o.p; }());
function inc() { this.p++; }
console.log(function(){ var o={p:6}; inc.call(o); console.log(o.p); return o.p; }());
console.log(function(){ var o={p:7}; console.log([o][0].p++); return o.p; }());
}
expect: {
console.log(function(){ var o={p:1}; o.p++; console.log(o.p); return o.p; }());
console.log(function(){ var o={p:2}; --o.p; console.log(o.p); return o.p; }());
console.log(function(){ var o={p:3}; o.p += ""; console.log(o.p); return o.p; }());
console.log(function(){ var o={p:4}; o = {}; console.log(o.p); return o.p; }());
console.log(function(){ var o={p:5}; o.p = -9; console.log(o.p); return o.p; }());
function inc() { this.p++; }
console.log(function(){ var o={p:6}; inc.call(o); console.log(o.p); return o.p; }());
console.log(function(){ var o={p:7}; console.log([o][0].p++); return o.p; }());
}
expect_stdout: true
}
unsafe_evaluate_unknown: {
options = {
evaluate: true,
reduce_vars: true,
unsafe: true,
unused: true,
}
input: {
console.log(function(){ var o={p:1}; console.log(o.not_present); return o.p; }());
console.log(function(){ var o={p:2}; console.log(o.prototype); return o.p; }());
console.log(function(){ var o={p:3}; console.log(o.hasOwnProperty); return o.p; }());
}
expect: {
console.log(function(){ var o={p:1}; console.log(o.not_present); return o.p; }());
console.log(function(){ var o={p:2}; console.log(o.prototype); return o.p; }());
console.log(function(){ var o={p:3}; console.log(o.hasOwnProperty); return o.p; }());
}
expect_stdout: true
}
unsafe_evaluate_object_1: {
options = {
evaluate : true,
reduce_vars : true,
@@ -251,7 +360,83 @@ unsafe_evaluate_object: {
}
}
unsafe_evaluate_array: {
unsafe_evaluate_object_2: {
options = {
evaluate: true,
reduce_vars: true,
toplevel: true,
unsafe: true,
}
input: {
var obj = {
foo: 1,
bar: 2,
square: function(x) {
return x * x;
},
cube: function(x) {
return x * x * x;
},
};
console.log(obj.foo, obj.bar, obj.square(2), obj.cube);
}
expect: {
var obj = {
foo: 1,
bar: 2,
square: function(x) {
return x * x;
},
cube: function(x) {
return x * x * x;
},
};
console.log(1, 2, obj.square(2), obj.cube);
}
expect_stdout: true
}
unsafe_evaluate_object_3: {
options = {
evaluate: true,
reduce_vars: true,
toplevel: true,
unsafe: true,
}
input: {
var obj = {
get foo() {
return 1;
},
bar: 2,
square: function(x) {
return x * x;
},
cube: function(x) {
return x * x * x;
},
};
console.log(obj.foo, obj.bar, obj.square(2), obj.cube);
}
expect: {
var obj = {
get foo() {
return 1;
},
bar: 2,
square: function(x) {
return x * x;
},
cube: function(x) {
return x * x * x;
},
};
console.log(obj.foo, obj.bar, obj.square(2), obj.cube);
}
expect_stdout: true
}
unsafe_evaluate_array_1: {
options = {
evaluate : true,
reduce_vars : true,
@@ -299,6 +484,132 @@ unsafe_evaluate_array: {
}
}
unsafe_evaluate_array_2: {
options = {
evaluate: true,
reduce_vars: true,
toplevel: true,
unsafe: true,
}
input: {
var arr = [
1,
2,
function(x) {
return x * x;
},
function(x) {
return x * x * x;
},
];
console.log(arr[0], arr[1], arr[2](2), arr[3]);
}
expect: {
var arr = [
1,
2,
function(x) {
return x * x;
},
function(x) {
return x * x * x;
},
];
console.log(1, 2, arr[2](2), arr[3]);
}
expect_stdout: true
}
unsafe_evaluate_array_3: {
options = {
evaluate: true,
reduce_vars: true,
toplevel: true,
unsafe: true,
}
input: {
var arr = [
1,
2,
function() {
return ++arr[0];
},
];
console.log(arr[0], arr[1], arr[2](), arr[0]);
}
expect: {
var arr = [
1,
2,
function() {
return ++arr[0];
},
];
console.log(arr[0], arr[1], arr[2](), arr[0]);
}
expect_stdout: "1 2 2 2"
}
unsafe_evaluate_array_4: {
options = {
evaluate: true,
reduce_vars: true,
toplevel: true,
unsafe: true,
}
input: {
var arr = [
1,
2,
function() {
return ++this[0];
},
];
console.log(arr[0], arr[1], arr[2], arr[0]);
}
expect: {
var arr = [
1,
2,
function() {
return ++this[0];
},
];
console.log(1, 2, arr[2], 1);
}
expect_stdout: true
}
unsafe_evaluate_array_5: {
options = {
evaluate: true,
reduce_vars: true,
toplevel: true,
unsafe: true,
}
input: {
var arr = [
1,
2,
function() {
return ++this[0];
},
];
console.log(arr[0], arr[1], arr[2](), arr[0]);
}
expect: {
var arr = [
1,
2,
function() {
return ++this[0];
},
];
console.log(arr[0], arr[1], arr[2](), arr[0]);
}
expect_stdout: "1 2 2 2"
}
unsafe_evaluate_equality_1: {
options = {
evaluate : true,
@@ -2766,6 +3077,7 @@ obj_var_2: {
evaluate: true,
inline: true,
passes: 2,
properties: true,
reduce_vars: true,
side_effects: true,
toplevel: true,
@@ -2822,10 +3134,10 @@ obj_arg_2: {
evaluate: true,
inline: true,
passes: 2,
properties: true,
reduce_vars: true,
side_effects: true,
toplevel: true,
unsafe: true,
unused: true,
}
input: {
@@ -3196,3 +3508,32 @@ issue_2406_2: {
}.fn());
}
}
escaped_prop: {
options = {
collapse_vars: true,
evaluate: true,
inline: true,
pure_getters: "strict",
reduce_vars: true,
side_effects: true,
toplevel: true,
unsafe: true,
unused: true,
}
input: {
var obj = { o: { a: 1 } };
(function(o) {
o.a++;
})(obj.o);
(function(o) {
console.log(o.a);
})(obj.o);
}
expect: {
var obj = { o: { a: 1 } };
obj.o.a++;
console.log(obj.o.a);
}
expect_stdout: "2"
}

View File

@@ -16,11 +16,9 @@
{},
{
"compress": {
"toplevel": true
"hoist_props": true
},
"mangle": {
"toplevel": true
}
},
{
"compress": {