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handle break & continue in collapse_vars (#2875)

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fixes #2873
This commit is contained in:
Alex Lam S.L
2018-02-03 07:58:43 +08:00
committed by GitHub
parent e6a2e9e4d0
commit 7e13c0db40
2 changed files with 51 additions and 0 deletions
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1
lib/compress.js
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@@ -968,6 +968,7 @@ merge(Compressor.prototype, {
|| node instanceof AST_Call && lhs instanceof AST_PropAccess && lhs.equivalent_to(node.expression)
|| node instanceof AST_Debugger
|| node instanceof AST_IterationStatement && !(node instanceof AST_For)
|| node instanceof AST_LoopControl
|| node instanceof AST_Try
|| node instanceof AST_With
|| parent instanceof AST_For && node !== parent.init

50
test/compress/collapse_vars.js
View File

@@ -4383,3 +4383,53 @@ cond_branch_switch: {
}
expect_stdout: "1"
}
issue_2873_1: {
options = {
collapse_vars: true,
}
input: {
var b = 1, c = 0;
do {
c++;
if (!--b) break;
c = 1 + c;
} while (0);
console.log(b, c);
}
expect: {
var b = 1, c = 0;
do {
c++;
if (!--b) break;
c = 1 + c;
} while (0);
console.log(b, c);
}
expect_stdout: "0 1"
}
issue_2873_2: {
options = {
collapse_vars: true,
}
input: {
var b = 1, c = 0;
do {
c++;
if (!--b) continue;
c = 1 + c;
} while (0);
console.log(b, c);
}
expect: {
var b = 1, c = 0;
do {
c++;
if (!--b) continue;
c = 1 + c;
} while (0);
console.log(b, c);
}
expect_stdout: "0 1"
}