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fix corner case in inline & unused (#5725)

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fixes #5724
This commit is contained in:
Alex Lam S.L
2022-10-29 03:53:30 +01:00
committed by GitHub
parent 7270671687
commit f40dbd6e33
3 changed files with 56 additions and 22 deletions
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4
lib/compress.js
View File

@@ -364,7 +364,7 @@ Compressor.prototype.compress = function(node) {
expression: make_node(AST_Function, self, {
argnames: [],
body: self.body,
}).init_vars(self),
}).init_vars(self, self),
args: [],
});
}
@@ -8963,7 +8963,7 @@ Compressor.prototype.compress = function(node) {
argnames: [],
body: [],
value: make_value(),
}).init_vars(self.parent_scope),
}).init_vars(self.parent_scope, self),
args: [],
}));
return make_sequence(self, exprs);

48
lib/scope.js
View File

@@ -439,35 +439,43 @@ AST_Toplevel.DEFMETHOD("def_global", function(node) {
}
});
function init_block_vars(scope, parent) {
scope.enclosed = []; // variables from this or outer scope(s) that are referenced from this or inner scopes
scope.parent_scope = parent; // the parent scope (null if this is the top level)
scope.functions = new Dictionary(); // map name to AST_SymbolDefun (functions defined in this scope)
scope.variables = new Dictionary(); // map name to AST_SymbolVar (variables defined in this scope; includes functions)
if (parent) scope.make_def = parent.make_def; // top-level tracking of SymbolDef instances
function init_block_vars(scope, parent, orig) {
// variables from this or outer scope(s) that are referenced from this or inner scopes
scope.enclosed = orig ? orig.enclosed.slice() : [];
// map name to AST_SymbolDefun (functions defined in this scope)
scope.functions = orig ? orig.functions.clone() : new Dictionary();
// map name to AST_SymbolVar (variables defined in this scope; includes functions)
scope.variables = orig ? orig.variables.clone() : new Dictionary();
if (!parent) return;
// top-level tracking of SymbolDef instances
scope.make_def = parent.make_def;
// the parent scope (null if this is the top level)
scope.parent_scope = parent;
}
function init_scope_vars(scope, parent) {
init_block_vars(scope, parent);
scope.uses_eval = false; // will be set to true if this or nested scope uses the global `eval`
scope.uses_with = false; // will be set to true if this or some nested scope uses the `with` statement
function init_scope_vars(scope, parent, orig) {
init_block_vars(scope, parent, orig);
// will be set to true if this or nested scope uses the global `eval`
scope.uses_eval = false;
// will be set to true if this or some nested scope uses the `with` statement
scope.uses_with = false;
}
AST_BlockScope.DEFMETHOD("init_vars", function(parent_scope) {
init_block_vars(this, parent_scope);
AST_BlockScope.DEFMETHOD("init_vars", function(parent, orig) {
init_block_vars(this, parent, orig);
});
AST_Scope.DEFMETHOD("init_vars", function(parent_scope) {
init_scope_vars(this, parent_scope);
AST_Scope.DEFMETHOD("init_vars", function(parent, orig) {
init_scope_vars(this, parent, orig);
});
AST_Arrow.DEFMETHOD("init_vars", function(parent_scope) {
init_scope_vars(this, parent_scope);
AST_Arrow.DEFMETHOD("init_vars", function(parent, orig) {
init_scope_vars(this, parent, orig);
return this;
});
AST_AsyncArrow.DEFMETHOD("init_vars", function(parent_scope) {
init_scope_vars(this, parent_scope);
AST_AsyncArrow.DEFMETHOD("init_vars", function(parent, orig) {
init_scope_vars(this, parent, orig);
});
AST_Lambda.DEFMETHOD("init_vars", function(parent_scope) {
init_scope_vars(this, parent_scope);
AST_Lambda.DEFMETHOD("init_vars", function(parent, orig) {
init_scope_vars(this, parent, orig);
this.uses_arguments = false;
this.def_variable(new AST_SymbolFunarg({
name: "arguments",

26
test/compress/classes.js
View File

@@ -3901,3 +3901,29 @@ issue_5682_class_key_computed: {
expect_stdout: "PASS"
node_version: ">=4"
}
issue_5724: {
options = {
arrows: true,
inline: true,
keep_fargs: true,
toplevel: true,
unused: true,
}
input: {
"use strict";
class A {
static P = function(a) {
console.log(a, a);
}(a);
}
}
expect: {
"use strict";
(function(a) {
console.log(a, a);
})(a);
}
expect_stdout: ReferenceError("a is not defined")
node_version: ">=12"
}