OptionalcaseFirst
caseFirst?: "upper" | "lower" | "false"
Optionalcollation
collation?:
| "big5han"
| "compat"
| "dict"
| "direct"
| "ducet"
| "emoji"
| "eor"
| "gb2312"
| "phonebk"
| "phonetic"
| "pinyin"
| "reformed"
| "searchjl"
| "stroke"
| "trad"
| "unihan"
| "zhuyin"
OptionalignorePunctuation
ignorePunctuation?: boolean
OptionallocaleMatcher
localeMatcher?: "lookup" | "best fit"
Optionalnumeric
numeric?: boolean
Optionalsensitivity
sensitivity?:
| "base"
| "accent"
| "case"
| "variant"
Optionalusage
usage?: "search" | "sort"