What configuration options does the slugify function accept?

The slugify function accepts the following configuration options (defined in [index.d.ts:L1-L80]):

1. separator (string, default: '-')

   • Customizes the character used to separate words in the slug

2. lowercase (boolean, default: true)

   • Controls whether the output is converted to lowercase

3. decamelize (boolean, default: true)

   • Converts camelCase to separate words (e.g., fooBar → foo bar)

4. customReplacements (Array<string[]>, default: [['&', ' and '], ['🦄', ' unicorn '], ['♥', ' love ']])

   • Allows you to define custom character/string replacements applied before other transformations
   • Overrides default replacements if you provide the same key

5. preserveLeadingUnderscore (boolean, default: false)

   • Preserves leading underscores in the slug (useful for hidden filenames)

6. preserveTrailingDash (boolean, default: false)

   • Preserves trailing dashes (useful for form validation)

7. preserveCharacters (string[], default: [])

   • Specifies characters to preserve in the output (cannot contain the separator)

8. transliterate (boolean, default: true)

   • Controls whether Unicode characters are transliterated to ASCII

9. locale (string, default: undefined)

   • Sets the locale for language-specific transliteration

The implementation merges these options with defaults in [index.js:L57-L66].

FOLLOW_UPS:

• How does customReplacements interact with transliterate?
• What happens with preserveCharacters when separator is empty?
• Does locale affect the decamelize behavior?