refactor(base): migrate search utils to typescript

packages/@sanity/base/src/preview/utils/optimizeQuery.ts

@@ -47,11 +47,14 @@ function toSubQuery({ids, fields}: {ids: string[]; fields: string[]}) {
     .join(',')}}`
 }
 
-export function toGradientQuery(combinedSelections: CombinedSelection[]) {
+export function toGradientQuery(combinedSelections: CombinedSelection[]): string {
   return `[${combinedSelections.map(toSubQuery).join(',')}][0...${combinedSelections.length}]`
 }
 
-export function reassemble(queryResult: Result[], combinedSelections: CombinedSelection[]) {
+export function reassemble(
+  queryResult: Result[],
+  combinedSelections: CombinedSelection[]
+): (Doc | null)[] {
   return queryResult.reduce((reprojected: (Doc | null)[], subResult, index) => {
     const map = combinedSelections[index].map
     map.forEach((resultIdx, i) => {

packages/@sanity/base/src/util/searchUtils.ts

@@ -0,0 +1,35 @@
+type SearchPathSegment = string | []
+
+const GROQ_KEYWORDS = ['match', 'in', 'asc', 'desc', 'true', 'false', 'null']
+const VALID_FIELD = /^[a-zA-Z_][a-zA-Z0-9_]*$/
+
+export const fieldNeedsEscape = (fieldName: string): boolean =>
+  !VALID_FIELD.test(fieldName) || GROQ_KEYWORDS.includes(fieldName)
+
+export const escapeField = (fieldName: string): string => `["${fieldName}"]`
+
+const escapeFirst = (fieldName: string): string => `@${escapeField(fieldName)}`
+
+const isEmptyArray = (value: unknown): value is [] => Array.isArray(value) && value.length === 0
+
+export const joinPath = (pathArray: SearchPathSegment[]): string => {
+  let path = ''
+  for (let i = 0; i < pathArray.length; i++) {
+    const pathSegment = pathArray[i]
+    if (isEmptyArray(pathSegment)) {
+      path += `[]`
+      continue
+    }
+
+    const isFirst = i === 0
+    const needsEscape = fieldNeedsEscape(pathSegment)
+
+    if (needsEscape) {
+      path = isFirst ? escapeFirst(pathSegment) : `${path}${escapeField(pathSegment)}`
+    } else {
+      path = isFirst ? pathSegment : `${path}.${pathSegment}`
+    }
+  }
+
+  return path
+}

packages/@sanity/base/test/searchUtils.test.js → packages/@sanity/base/test/searchUtils.test.ts

@@ -9,7 +9,7 @@ test('fieldNeedsEscape', () => {
   expect(fieldNeedsEscape('foobar123')).toBe(false)
 
   // Keywords
-  ;[('match', 'in', 'asc', 'desc', 'true', 'false', 'null')].forEach((kw) => {
+  ;['match', 'in', 'asc', 'desc', 'true', 'false', 'null'].forEach((kw) => {
     expect(fieldNeedsEscape(kw)).toBe(true)
   })
 })
@@ -22,7 +22,7 @@ test('escapeField', () => {
   expect(escapeField('foobar')).toBe('["foobar"]')
 
   // Keywords
-  ;[('match', 'in', 'asc', 'desc', 'true', 'false', 'null')].forEach((kw) => {
+  ;['match', 'in', 'asc', 'desc', 'true', 'false', 'null'].forEach((kw) => {
     expect(escapeField(kw)).toBe(`["${kw}"]`)
   })
 })