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feat(minifier): minimize Infinity.toString(radix) to 'Infinity' (#8732)

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Co-authored-by: sapphi-red <49056869+sapphi-red@users.noreply.github.com>
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Boshen 2025-01-26 22:14:24 +08:00 committed by GitHub
parent e0117db531
commit 29bd215f4f
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1 changed files with 6 additions and 0 deletions
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6
crates/oxc_minifier/src/peephole/replace_known_methods.rs
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@ -303,6 +303,10 @@ impl<'a> PeepholeOptimizations {
} }
// Only convert integers for other radix values. // Only convert integers for other radix values.
let value = lit.value; let value = lit.value;
if value.is_infinite() {
let s = if value.is_sign_negative() { "-Infinity" } else { "Infinity" };
return Some(ctx.ast.expression_string_literal(span, s, None));
}
if value.is_nan() { if value.is_nan() {
return Some(ctx.ast.expression_string_literal(span, "NaN", None)); return Some(ctx.ast.expression_string_literal(span, "NaN", None));
} }
@ -1540,6 +1544,8 @@ mod test {
test("x = NaN.toString()", "x = 'NaN';"); test("x = NaN.toString()", "x = 'NaN';");
test("x = NaN.toString(2)", "x = 'NaN';"); test("x = NaN.toString(2)", "x = 'NaN';");
test("x = Infinity.toString()", "x = 'Infinity';"); test("x = Infinity.toString()", "x = 'Infinity';");
test("x = Infinity.toString(2)", "x = 'Infinity';");
test("x = (-Infinity).toString(2)", "x = '-Infinity';");
test("x = 1n.toString()", "x = '1'"); test("x = 1n.toString()", "x = '1'");
test_same("254n.toString(16);"); // unimplemented test_same("254n.toString(16);"); // unimplemented
// test("/a\\\\b/ig.toString()", "'/a\\\\\\\\b/ig';"); // test("/a\\\\b/ig.toString()", "'/a\\\\\\\\b/ig';");