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fix corner case in templates

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fixes #5136
This commit is contained in:
alexlamsl 2021-09-30 11:15:08 +08:00
parent 157521066f
commit 4dd4bed2d5
2 changed files with 23 additions and 9 deletions
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18
lib/compress.js
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@ -11374,15 +11374,6 @@ merge(Compressor.prototype, {
if (!tag) status = typeof trimmed;
}
if (!tag && strs.length > 1) {
if (strs[0] == "") return make_node(AST_Binary, self, {
operator: "+",
left: exprs[0],
right: make_node(AST_Template, self, {
expressions: exprs.slice(1),
strings: strs.slice(1),
tag: tag,
}).transform(compressor),
}).optimize(compressor);
if (strs[strs.length - 1] == "") return make_node(AST_Binary, self, {
operator: "+",
left: make_node(AST_Template, self, {
@ -11392,6 +11383,15 @@ merge(Compressor.prototype, {
}).transform(compressor),
right: exprs[exprs.length - 1],
}).optimize(compressor);
if (strs[0] == "") return make_node(AST_Binary, self, {
operator: "+",
left: exprs[0],
right: make_node(AST_Template, self, {
expressions: exprs.slice(1),
strings: strs.slice(1),
tag: tag,
}).transform(compressor),
}).optimize(compressor);
}
self.expressions = exprs;
self.strings = strs;

14
test/compress/templates.js
View File

@ -685,3 +685,17 @@ issue_5125_8: {
expect_stdout: "undefinedundefinedundefined PASS"
node_version: ">=4"
}
issue_5136: {
options = {
templates: true,
}
input: {
console.log(`${A = []}${A[0] = 42}`);
}
expect: {
console.log(`` + (A = []) + (A[0] = 42));
}
expect_stdout: "42"
node_version: ">=4"
}