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fix(linter/prefer-array-flat-map): compare against numeric value, not raw #12358

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fix(linter/prefer-array-flat-map): compare against numeric value, not raw #12358

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4 changes: 2 additions & 2 deletions crates/oxc_linter/src/rules/unicorn/prefer_array_flat_map.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -69,7 +69,7 @@ impl Rule for PreferArrayFlatMap {

if let Some(first_arg) = flat_call_expr.arguments.first() {
if let Argument::NumericLiteral(number_lit) = first_arg {
if number_lit.raw.as_ref().unwrap() != "1" {
if (number_lit.value - 1.0).abs() > f64::EPSILON {
return;
}
} else {
Expand Down Expand Up @@ -117,7 +117,6 @@ fn test() {
("const bar = [[1],[2],[3]].map(i => [i]).flat(+1)", None),
("const bar = [[1],[2],[3]].map(i => [i]).flat(foo)", None),
("const bar = [[1],[2],[3]].map(i => [i]).flat(foo.bar)", None),
("const bar = [[1],[2],[3]].map(i => [i]).flat(1.00)", None),
];

let fail = vec![
Expand All @@ -134,6 +133,7 @@ fn test() {
("const bar = (([1,2,3].map(i => [i]))).flat()", None),
("let bar = [1,2,3] . map( x => y ) . flat () // 🤪", None),
("const bar = [1,2,3].map(i => [i]).flat(1);", None),
("const bar = [[1],[2],[3]].map(i => [i]).flat(1.00)", None),
];

let fix = vec![
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7 changes: 7 additions & 0 deletions crates/oxc_linter/src/snapshots/unicorn_prefer_array_flat_map.snap
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Expand Up @@ -91,3 +91,10 @@ source: crates/oxc_linter/src/tester.rs
· ─────────────────────────────
╰────
help: Prefer `.flatMap(…)` over `.map(…).flat()`.

⚠ eslint-plugin-unicorn(prefer-array-flat-map): `Array.flatMap` performs `Array.map` and `Array.flat` in one step.
╭─[prefer_array_flat_map.tsx:1:13]
1 │ const bar = [[1],[2],[3]].map(i => [i]).flat(1.00)
· ──────────────────────────────────────
╰────
help: Prefer `.flatMap(…)` over `.map(…).flat()`.
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