js-01-slugify

1.000

9/9 tests· basic

Proposed solution

```js
export function slugify(input) {
  return input
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, '-')
    .replace(/^-|-$/g, '');
}
```

Test output (stdout)

TAP version 13
# Subtest: spaces become single hyphens
ok 1 - spaces become single hyphens
  ---
  duration_ms: 0.425334
  type: 'test'
  ...
# Subtest: punctuation collapses and ends are trimmed
ok 2 - punctuation collapses and ends are trimmed
  ---
  duration_ms: 0.064721
  type: 'test'
  ...
# Subtest: already-clean input is unchanged
ok 3 - already-clean input is unchanged
  ---
  duration_ms: 0.046311
  type: 'test'
  ...
# Subtest: digits are preserved
ok 4 - digits are preserved
  ---
  duration_ms: 0.04587
  type: 'test'
  ...
# Subtest: runs of mixed separators collapse to one hyphen
ok 5 - runs of mixed separators collapse to one hyphen
  ---
  duration_ms: 0.07582
  type: 'test'
  ...
# Subtest: leading and trailing junk is trimmed
ok 6 - leading and trailing junk is trimmed
  ---
  duration_ms: 0.04273
  type: 'test'
  ...
# Subtest: all-separator input becomes empty string
ok 7 - all-separator input becomes empty string
  ---
  duration_ms: 0.040741
  type: 'test'
  ...
# Subtest: empty string stays empty
ok 8 - empty string stays empty
  ---
  duration_ms: 0.03997
  type: 'test'
  ...
# Subtest: non-ASCII letters act as separators
ok 9 - non-ASCII letters act as separators
  ---
  duration_ms: 0.053161
  type: 'test'
  ...
1..9
# tests 9
# suites 0
# pass 9
# fail 0
# cancelled 0
# skipped 0
# todo 0
# duration_ms 31.18164

System prompt

You are an expert programmer. Solve the task exactly as specified. Output your solution as fenced code blocks using the required file name(s) and the exact function/type signatures requested. Prefer correctness; do not include prose outside code unless asked.