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fix corner case in string concatenations (#3692)

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- migrate de-facto compression to `conditionals` & `strings`

fixes #3689
This commit is contained in:
Alex Lam S.L
2020-01-28 07:33:11 +08:00
committed by GitHub
parent 0dcedad2d5
commit e9e76dcf04
6 changed files with 164 additions and 98 deletions
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157
test/compress/issue-269.js
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@@ -1,98 +1,111 @@
issue_269_1: {
options = {
options = {
unsafe: true,
}
input: {
f(
String(x),
Number(x),
Boolean(x),
input: {
var x = {};
console.log(
String(x),
Number(x),
Boolean(x),
String(),
Number(),
Boolean()
);
}
expect: {
f(
x + '', +x, !!x,
'', 0, false
);
}
String(),
Number(),
Boolean()
);
}
expect: {
var x = {};
console.log(
x + "", +x, !!x,
"", 0, false
);
}
expect_stdout: true
}
issue_269_dangers: {
options = {
options = {
unsafe: true,
}
input: {
f(
String(x, x),
Number(x, x),
Boolean(x, x)
);
}
expect: {
f(String(x, x), Number(x, x), Boolean(x, x));
}
input: {
var x = {};
console.log(
String(x, x),
Number(x, x),
Boolean(x, x)
);
}
expect: {
var x = {};
console.log(String(x, x), Number(x, x), Boolean(x, x));
}
expect_stdout: true
}
issue_269_in_scope: {
options = {
options = {
unsafe: true,
}
input: {
var String, Number, Boolean;
f(
String(x),
Number(x, x),
Boolean(x)
);
}
expect: {
var String, Number, Boolean;
f(String(x), Number(x, x), Boolean(x));
}
input: {
var String, Number, Boolean;
var x = {};
console.log(
String(x),
Number(x, x),
Boolean(x)
);
}
expect: {
var String, Number, Boolean;
var x = {};
console.log(String(x), Number(x, x), Boolean(x));
}
expect_stdout: true
}
strings_concat: {
options = {
options = {
strings: true,
unsafe: true,
}
input: {
f(
String(x + 'str'),
String('str' + x)
);
}
expect: {
f(
x + 'str',
'str' + x
);
}
input: {
var x = {};
console.log(
String(x + "str"),
String("str" + x)
);
}
expect: {
var x = {};
console.log(
x + "str",
"str" + x
);
}
expect_stdout: true
}
regexp: {
options = {
options = {
evaluate: true,
unsafe: true,
}
input: {
RegExp("foo");
RegExp("bar", "ig");
RegExp(foo);
RegExp("bar", ig);
RegExp("should", "fail");
}
expect: {
/foo/;
/bar/ig;
RegExp(foo);
RegExp("bar", ig);
RegExp("should", "fail");
}
expect_warnings: [
'WARN: Error converting RegExp("should","fail") [test/compress/issue-269.js:5,2]',
]
input: {
RegExp("foo");
RegExp("bar", "ig");
RegExp(foo);
RegExp("bar", ig);
RegExp("should", "fail");
}
expect: {
/foo/;
/bar/ig;
RegExp(foo);
RegExp("bar", ig);
RegExp("should", "fail");
}
expect_warnings: [
'WARN: Error converting RegExp("should","fail") [test/compress/issue-269.js:5,8]',
]
}