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enhance unused (#5511)

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This commit is contained in:
Alex Lam S.L
2022-06-12 14:24:42 +01:00
committed by GitHub
parent 5d69545299
commit b6f250f5c9
4 changed files with 239 additions and 11 deletions
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70
test/compress/drop-unused.js
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@@ -671,6 +671,76 @@ iife: {
}
}
drop_instanceof: {
options = {
booleans: true,
toplevel: true,
unused: true,
}
input: {
function f() {}
console.log({} instanceof f, Math instanceof f);
}
expect: {
console.log(!1, (Math, !1));
}
expect_stdout: "false false"
}
keep_instanceof_1: {
options = {
toplevel: true,
unused: true,
}
input: {
function f() {}
var f;
console.log({} instanceof f, Math instanceof f);
}
expect: {
function f() {}
var f;
console.log({} instanceof f, Math instanceof f);
}
expect_stdout: "false false"
}
keep_instanceof_2: {
options = {
toplevel: true,
unused: true,
}
input: {
function f() {}
var f = Object;
console.log({} instanceof f, Math instanceof f);
}
expect: {
function f() {}
var f = Object;
console.log({} instanceof f, Math instanceof f);
}
expect_stdout: "true true"
}
keep_instanceof_3: {
options = {
toplevel: true,
unused: true,
}
input: {
f = Object;
function f() {}
console.log({} instanceof f, Math instanceof f);
}
expect: {
f = Object;
function f() {}
console.log({} instanceof f, Math instanceof f);
}
expect_stdout: "true true"
}
issue_1539: {
options = {
collapse_vars: true,