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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ use crate::{CompressOptions, CompressorPass};
/// Collapse variable declarations.
///
/// `var a; var b = 1; var c = 2` => `var a, b = 1; c = 2`
/// <https://github.com/google/closure-compiler/blob/master/src/com/google/javascript/jscomp/CollapseVariableDeclarations.java>
pub struct CollapseVariableDeclarations {
options: CompressOptions,

Expand Down Expand Up @@ -99,7 +100,7 @@ impl<'a> CollapseVariableDeclarations {
}
}

/// <https://github.com/google/closure-compiler/blob/master/test/com/google/javascript/jscomp/CollapseVariableDeclarations.java>
/// <https://github.com/google/closure-compiler/blob/master/test/com/google/javascript/jscomp/CollapseVariableDeclarationsTest.java>
#[cfg(test)]
mod test {
use oxc_allocator::Allocator;
Expand Down
1 change: 1 addition & 0 deletions crates/oxc_minifier/src/ast_passes/exploit_assigns.rs
Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ impl ExploitAssigns {
}
}

/// <https://github.com/google/closure-compiler/blob/master/test/com/google/javascript/jscomp/ExploitAssignsTest.java>
#[cfg(test)]
mod test {
use oxc_allocator::Allocator;
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -867,7 +867,7 @@ impl<'a> PeepholeFoldConstants {
}
}

/// <https://github.com/google/closure-compiler/blob/master/test/com/google/javascript/jscomp/PeepholeFoldConstants.java>
/// <https://github.com/google/closure-compiler/blob/master/test/com/google/javascript/jscomp/PeepholeFoldConstantsTest.java>
#[cfg(test)]
mod test {
use oxc_allocator::Allocator;
Expand Down
48 changes: 48 additions & 0 deletions crates/oxc_minifier/src/ast_passes/peephole_remove_dead_code.rs
Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ use crate::{keep_var::KeepVar, node_util::NodeUtil, tri::Tri, CompressorPass};
/// Terser option: `dead_code: true`.
///
/// See `KeepVar` at the end of this file for `var` hoisting logic.
/// <https://github.com/google/closure-compiler/blob/master/src/com/google/javascript/jscomp/PeepholeRemoveDeadCode.java>
pub struct PeepholeRemoveDeadCode {
changed: bool,
}
Expand Down Expand Up @@ -183,3 +184,50 @@ impl<'a> PeepholeRemoveDeadCode {
}
}
}

/// <https://github.com/google/closure-compiler/blob/master/test/com/google/javascript/jscomp/PeepholeRemoveDeadCodeTest.java>
#[cfg(test)]
mod test {
use oxc_allocator::Allocator;

use crate::tester;

fn test(source_text: &str, positive: &str) {
let allocator = Allocator::default();
let mut pass = super::PeepholeRemoveDeadCode::new();
tester::test(&allocator, source_text, positive, &mut pass);
}

fn test_same(source_text: &str) {
test(source_text, source_text);
}

fn fold_same(js: &str) {
test_same(js);
}

fn fold(js: &str, expected: &str) {
test(js, expected);
}

#[test]
#[ignore]
fn test_remove_no_op_labelled_statement() {
fold("a: break a;", "");
fold("a: { break a; }", "");

fold(
//
"a: { break a; console.log('unreachable'); }", //
"",
);
fold(
//
"a: { break a; var x = 1; } x = 2;", //
"var x; x = 2;",
);

fold_same("b: { var x = 1; } x = 2;");
fold_same("a: b: { var x = 1; } x = 2;");
}
}
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ use oxc_traverse::{Traverse, TraverseCtx};
use crate::CompressorPass;

/// Minimize With Known Methods
/// <https://github.com/google/closure-compiler/blob/master/src/com/google/javascript/jscomp/PeepholeMinimizeReplacements.java>
/// <https://github.com/google/closure-compiler/blob/master/src/com/google/javascript/jscomp/PeepholeReplaceKnownMethods.java>
pub struct PeepholeReplaceKnownMethods {
changed: bool,
}
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ use crate::{node_util::NodeUtil, CompressOptions, CompressorPass};
/// A peephole optimization that minimizes code by simplifying conditional
/// expressions, replacing IFs with HOOKs, replacing object constructors
/// with literals, and simplifying returns.
/// <https://github.com/google/closure-compiler/blob/master/src/com/google/javascript/jscomp/PeepholeSubstituteAlternateSyntax.java>
pub struct PeepholeSubstituteAlternateSyntax {
options: CompressOptions,
in_define_export: bool,
Expand Down Expand Up @@ -329,7 +330,7 @@ impl<'a> PeepholeSubstituteAlternateSyntax {
}
}

/// <https://github.com/google/closure-compiler/blob/master/test/com/google/javascript/jscomp/PeepholeSubstituteAlternateSyntax.java>
/// <https://github.com/google/closure-compiler/blob/master/test/com/google/javascript/jscomp/PeepholeSubstituteAlternateSyntaxTest.java>
#[cfg(test)]
mod test {
use oxc_allocator::Allocator;
Expand Down