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