fix(types): resolve typecheck errors and align KeyStore types

- Bump tsconfig module/target to esnext/es2020 so import.meta in
  FuseWorker resolves.
- Replace truthy check on String.prototype.normalize with a typeof
  guard.
- Align KeyStore's local getFn type with KeyObject.getFn, guard
  key.weight access, stringify array-path names in error messages.
- Replace lying any cast in extended search with honest RangeTuple
  casts.

Author: krisk

src/helpers/diacritics.ts

@@ -19,7 +19,7 @@ const NON_DECOMPOSABLE_RE = new RegExp(
   'g'
 )
 
-export const stripDiacritics: (str: string) => string = String.prototype.normalize
+export const stripDiacritics: (str: string) => string = typeof String.prototype.normalize === 'function'
     ? ((str: string) => str
         .normalize('NFD')
         .replace(/[\u0300-\u036F\u0483-\u0489\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7\u06E8\u06EA-\u06ED\u0711\u0730-\u074A\u07A6-\u07B0\u07EB-\u07F3\u07FD\u0816-\u0819\u081B-\u0823\u0825-\u0827\u0829-\u082D\u0859-\u085B\u08D3-\u08E1\u08E3-\u0903\u093A-\u093C\u093E-\u094F\u0951-\u0957\u0962\u0963\u0981-\u0983\u09BC\u09BE-\u09C4\u09C7\u09C8\u09CB-\u09CD\u09D7\u09E2\u09E3\u09FE\u0A01-\u0A03\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A70\u0A71\u0A75\u0A81-\u0A83\u0ABC\u0ABE-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AE2\u0AE3\u0AFA-\u0AFF\u0B01-\u0B03\u0B3C\u0B3E-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B62\u0B63\u0B82\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD7\u0C00-\u0C04\u0C3E-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C62\u0C63\u0C81-\u0C83\u0CBC\u0CBE-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CE2\u0CE3\u0D00-\u0D03\u0D3B\u0D3C\u0D3E-\u0D44\u0D46-\u0D48\u0D4A-\u0D4D\u0D57\u0D62\u0D63\u0D82\u0D83\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DF2\u0DF3\u0E31\u0E34-\u0E3A\u0E47-\u0E4E\u0EB1\u0EB4-\u0EB9\u0EBB\u0EBC\u0EC8-\u0ECD\u0F18\u0F19\u0F35\u0F37\u0F39\u0F3E\u0F3F\u0F71-\u0F84\u0F86\u0F87\u0F8D-\u0F97\u0F99-\u0FBC\u0FC6\u102B-\u103E\u1056-\u1059\u105E-\u1060\u1062-\u1064\u1067-\u106D\u1071-\u1074\u1082-\u108D\u108F\u109A-\u109D\u135D-\u135F\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17B4-\u17D3\u17DD\u180B-\u180D\u1885\u1886\u18A9\u1920-\u192B\u1930-\u193B\u1A17-\u1A1B\u1A55-\u1A5E\u1A60-\u1A7C\u1A7F\u1AB0-\u1ABE\u1B00-\u1B04\u1B34-\u1B44\u1B6B-\u1B73\u1B80-\u1B82\u1BA1-\u1BAD\u1BE6-\u1BF3\u1C24-\u1C37\u1CD0-\u1CD2\u1CD4-\u1CE8\u1CED\u1CF2-\u1CF4\u1CF7-\u1CF9\u1DC0-\u1DF9\u1DFB-\u1DFF\u20D0-\u20F0\u2CEF-\u2CF1\u2D7F\u2DE0-\u2DFF\u302A-\u302F\u3099\u309A\uA66F-\uA672\uA674-\uA67D\uA69E\uA69F\uA6F0\uA6F1\uA802\uA806\uA80B\uA823-\uA827\uA880\uA881\uA8B4-\uA8C5\uA8E0-\uA8F1\uA8FF\uA926-\uA92D\uA947-\uA953\uA980-\uA983\uA9B3-\uA9C0\uA9E5\uAA29-\uAA36\uAA43\uAA4C\uAA4D\uAA7B-\uAA7D\uAAB0\uAAB2-\uAAB4\uAAB7\uAAB8\uAABE\uAABF\uAAC1\uAAEB-\uAAEF\uAAF5\uAAF6\uABE3-\uABEA\uABEC\uABED\uFB1E\uFE00-\uFE0F\uFE20-\uFE2F]/g, '')

src/search/extended/index.ts

@@ -107,9 +107,9 @@ export default class ExtendedSearch {
 
           if (includeMatches) {
             if (MULTI_MATCH_TYPES.has(matcher.type)) {
-              allIndices.push(...(indices as any))
+              allIndices.push(...(indices as unknown as RangeTuple[]))
             } else {
-              allIndices.push(indices)
+              allIndices.push(indices as unknown as RangeTuple)
             }
           }
         } else {

src/tools/KeyStore.ts

@@ -44,7 +44,7 @@ export function createKey(key: FuseOptionKey<any>): KeyObject {
   let id: string | null = null
   let src: string | string[] | null = null
   let weight: number = 1
-  let getFn: ((obj: any) => string | string[]) | null = null
+  let getFn: ((obj: any) => ReadonlyArray<string> | string | null | undefined) | null = null
 
   if (isString(key) || isArray(key)) {
     src = key
@@ -58,17 +58,17 @@ export function createKey(key: FuseOptionKey<any>): KeyObject {
     const name = key.name
     src = name
 
-    if (hasOwn.call(key, 'weight')) {
+    if (hasOwn.call(key, 'weight') && key.weight !== undefined) {
       weight = key.weight
 
       if (weight <= 0) {
-        throw new Error(ErrorMsg.INVALID_KEY_WEIGHT_VALUE(name))
+        throw new Error(ErrorMsg.INVALID_KEY_WEIGHT_VALUE(createKeyId(name)))
       }
     }
 
     path = createKeyPath(name)
     id = createKeyId(name)
-    getFn = key.getFn
+    getFn = key.getFn ?? null
   }
 
   return { path: path!, id: id!, weight, src: src!, getFn }

tsconfig.base.json

@@ -1,8 +1,8 @@
 {
   "compilerOptions": {
-    "module": "es6",
-    "lib": ["es6"],
-    "target": "es6",
+    "module": "esnext",
+    "lib": ["es2020", "dom"],
+    "target": "es2020",
     "moduleResolution": "bundler",
     "resolveJsonModule": true,
     "esModuleInterop": true,