@@ -66,7 +66,7 @@ generated_file_test(
 # digit-mapping
 generate_src_file(
     name = "digit-mapping",
-    src = "NumberFormat/digit-mapping.json",
+    src = "NumberFormat/digit-mapping.generated.ts",
     entry_point = "scripts/digit-mapping.ts",
 )
 
 
@@ -17,7 +17,7 @@ import {CoerceOptionsToObject} from '../CoerceOptionsToObject'
  */
 export function InitializeNumberFormat(
   nf: Intl.NumberFormat,
-  locales: string | string[] | undefined,
+  locales: string | ReadonlyArray<string> | undefined,
   opts: NumberFormatOptions | undefined,
   {
     getInternalSlots,
@@ -30,7 +30,7 @@ export function InitializeNumberFormat(
     getInternalSlots(nf: Intl.NumberFormat): NumberFormatInternal
     localeData: Record<string, NumberFormatLocaleInternalData | undefined>
     availableLocales: Set<string>
-    numberingSystemNames: string[]
+    numberingSystemNames: ReadonlyArray<string>
     getDefaultLocale(): string
     currencyDigitsData: Record<string, number>
   }
 
@@ -0,0 +1 @@
+export const digitMapping: Record<string, ReadonlyArray<string>> = {"adlm":["𞥐","𞥑","𞥒","𞥓","𞥔","𞥕","𞥖","𞥗","𞥘","𞥙"],"ahom":["𑜰","𑜱","𑜲","𑜳","𑜴","𑜵","𑜶","𑜷","𑜸","𑜹"],"arab":["٠","١","٢","٣","٤","٥","٦","٧","٨","٩"],"arabext":["۰","۱","۲","۳","۴","۵","۶","۷","۸","۹"],"bali":["᭐","᭑","᭒","᭓","᭔","᭕","᭖","᭗","᭘","᭙"],"beng":["০","১","২","৩","৪","৫","৬","৭","৮","৯"],"bhks":["𑱐","𑱑","𑱒","𑱓","𑱔","𑱕","𑱖","𑱗","𑱘","𑱙"],"brah":["𑁦","𑁧","𑁨","𑁩","𑁪","𑁫","𑁬","𑁭","𑁮","𑁯"],"cakm":["𑄶","𑄷","𑄸","𑄹","𑄺","𑄻","𑄼","𑄽","𑄾","𑄿"],"cham":["꩐","꩑","꩒","꩓","꩔","꩕","꩖","꩗","꩘","꩙"],"deva":["०","१","२","३","४","५","६","७","८","९"],"diak":["𑥐","𑥑","𑥒","𑥓","𑥔","𑥕","𑥖","𑥗","𑥘","𑥙"],"fullwide":["０","１","２","３","４","５","６","７","８","９"],"gong":["𑶠","𑶡","𑶢","𑶣","𑶤","𑶥","𑶦","𑶧","𑶨","𑶩"],"gonm":["𑵐","𑵑","𑵒","𑵓","𑵔","𑵕","𑵖","𑵗","𑵘","𑵙"],"gujr":["૦","૧","૨","૩","૪","૫","૬","૭","૮","૯"],"guru":["੦","੧","੨","੩","੪","੫","੬","੭","੮","੯"],"hanidec":["〇","一","二","三","四","五","六","七","八","九"],"hmng":["𖭐","𖭑","𖭒","𖭓","𖭔","𖭕","𖭖","𖭗","𖭘","𖭙"],"hmnp":["𞅀","𞅁","𞅂","𞅃","𞅄","𞅅","𞅆","𞅇","𞅈","𞅉"],"java":["꧐","꧑","꧒","꧓","꧔","꧕","꧖","꧗","꧘","꧙"],"kali":["꤀","꤁","꤂","꤃","꤄","꤅","꤆","꤇","꤈","꤉"],"khmr":["០","១","២","៣","៤","៥","៦","៧","៨","៩"],"knda":["೦","೧","೨","೩","೪","೫","೬","೭","೮","೯"],"lana":["᪀","᪁","᪂","᪃","᪄","᪅","᪆","᪇","᪈","᪉"],"lanatham":["᪐","᪑","᪒","᪓","᪔","᪕","᪖","᪗","᪘","᪙"],"laoo":["໐","໑","໒","໓","໔","໕","໖","໗","໘","໙"],"lepc":["᪐","᪑","᪒","᪓","᪔","᪕","᪖","᪗","᪘","᪙"],"limb":["᥆","᥇","᥈","᥉","᥊","᥋","᥌","᥍","᥎","᥏"],"mathbold":["𝟎","𝟏","𝟐","𝟑","𝟒","𝟓","𝟔","𝟕","𝟖","𝟗"],"mathdbl":["𝟘","𝟙","𝟚","𝟛","𝟜","𝟝","𝟞","𝟟","𝟠","𝟡"],"mathmono":["𝟶","𝟷","𝟸","𝟹","𝟺","𝟻","𝟼","𝟽","𝟾","𝟿"],"mathsanb":["𝟬","𝟭","𝟮","𝟯","𝟰","𝟱","𝟲","𝟳","𝟴","𝟵"],"mathsans":["𝟢","𝟣","𝟤","𝟥","𝟦","𝟧","𝟨","𝟩","𝟪","𝟫"],"mlym":["൦","൧","൨","൩","൪","൫","൬","൭","൮","൯"],"modi":["𑙐","𑙑","𑙒","𑙓","𑙔","𑙕","𑙖","𑙗","𑙘","𑙙"],"mong":["᠐","᠑","᠒","᠓","᠔","᠕","᠖","᠗","᠘","᠙"],"mroo":["𖩠","𖩡","𖩢","𖩣","𖩤","𖩥","𖩦","𖩧","𖩨","𖩩"],"mtei":["꯰","꯱","꯲","꯳","꯴","꯵","꯶","꯷","꯸","꯹"],"mymr":["၀","၁","၂","၃","၄","၅","၆","၇","၈","၉"],"mymrshan":["႐","႑","႒","႓","႔","႕","႖","႗","႘","႙"],"mymrtlng":["꧰","꧱","꧲","꧳","꧴","꧵","꧶","꧷","꧸","꧹"],"newa":["𑑐","𑑑","𑑒","𑑓","𑑔","𑑕","𑑖","𑑗","𑑘","𑑙"],"nkoo":["߀","߁","߂","߃","߄","߅","߆","߇","߈","߉"],"olck":["᱐","᱑","᱒","᱓","᱔","᱕","᱖","᱗","᱘","᱙"],"orya":["୦","୧","୨","୩","୪","୫","୬","୭","୮","୯"],"osma":["𐒠","𐒡","𐒢","𐒣","𐒤","𐒥","𐒦","𐒧","𐒨","𐒩"],"rohg":["𐴰","𐴱","𐴲","𐴳","𐴴","𐴵","𐴶","𐴷","𐴸","𐴹"],"saur":["꣐","꣑","꣒","꣓","꣔","꣕","꣖","꣗","꣘","꣙"],"segment":["🯰","🯱","🯲","🯳","🯴","🯵","🯶","🯷","🯸","🯹"],"shrd":["𑇐","𑇑","𑇒","𑇓","𑇔","𑇕","𑇖","𑇗","𑇘","𑇙"],"sind":["𑋰","𑋱","𑋲","𑋳","𑋴","𑋵","𑋶","𑋷","𑋸","𑋹"],"sinh":["෦","෧","෨","෩","෪","෫","෬","෭","෮","෯"],"sora":["𑃰","𑃱","𑃲","𑃳","𑃴","𑃵","𑃶","𑃷","𑃸","𑃹"],"sund":["᮰","᮱","᮲","᮳","᮴","᮵","᮶","᮷","᮸","᮹"],"takr":["𑛀","𑛁","𑛂","𑛃","𑛄","𑛅","𑛆","𑛇","𑛈","𑛉"],"talu":["᧐","᧑","᧒","᧓","᧔","᧕","᧖","᧗","᧘","᧙"],"tamldec":["௦","௧","௨","௩","௪","௫","௬","௭","௮","௯"],"telu":["౦","౧","౨","౩","౪","౫","౬","౭","౮","౯"],"thai":["๐","๑","๒","๓","๔","๕","๖","๗","๘","๙"],"tibt":["༠","༡","༢","༣","༤","༥","༦","༧","༨","༩"],"tirh":["𑓐","𑓑","𑓒","𑓓","𑓔","𑓕","𑓖","𑓗","𑓘","𑓙"],"vaii":["ᘠ","ᘡ","ᘢ","ᘣ","ᘤ","ᘥ","ᘦ","ᘧ","ᘨ","ᘩ"],"wara":["𑣠","𑣡","𑣢","𑣣","𑣤","𑣥","𑣦","𑣧","𑣨","𑣩"],"wcho":["𞋰","𞋱","𞋲","𞋳","𞋴","𞋵","𞋶","𞋷","𞋸","𞋹"]};
@@ -15,7 +15,7 @@ import {
 } from '../types/number'
 import {ToRawFixed} from './ToRawFixed'
 import {LDMLPluralRule} from '../types/plural-rules'
-import * as digitMapping from './digit-mapping.json'
+import {digitMapping} from './digit-mapping.generated'
 import {S_UNICODE_REGEX} from '../regex.generated'
 
 // This is from: unicode-12.1.0/General_Category/Symbol/regex.js
 
@@ -1,5 +1,5 @@
 import minimist from 'minimist'
-import {outputJSONSync} from 'fs-extra'
+import {outputFileSync} from 'fs-extra'
 
 // Generate an array of 10 characters with consecutive codepoint, starting from `starCharCode`.
 function generateDigitChars(startCharCode: number): string[] {
@@ -92,7 +92,12 @@ const digitMapping: Record<string, string[]> = {
 
 function main(args: minimist.ParsedArgs) {
   const {out} = args
-  outputJSONSync(out, digitMapping)
+  outputFileSync(
+    out,
+    `export const digitMapping: Record<string, ReadonlyArray<string>> = ${JSON.stringify(
+      digitMapping
+    )};`
+  )
 }
 
 if (require.main === module) {
Original file line number	Diff line number	Diff line change
`@@ -66,7 +66,7 @@ generated_file_test(`
`66`	`66`	`# digit-mapping`
`67`	`67`	`generate_src_file(`
`68`	`68`	`name = "digit-mapping",`
`69`		`- src = "NumberFormat/digit-mapping.json",`
	`69`	`+ src = "NumberFormat/digit-mapping.generated.ts",`
`70`	`70`	`entry_point = "scripts/digit-mapping.ts",`
`71`	`71`	`)`
`72`	`72`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+export const digitMapping: Record<string, ReadonlyArray<string>> = {"adlm":["𞥐","𞥑","𞥒","𞥓","𞥔","𞥕","𞥖","𞥗","𞥘","𞥙"],"ahom":["𑜰","𑜱","𑜲","𑜳","𑜴","𑜵","𑜶","𑜷","𑜸","𑜹"],"arab":["٠","١","٢","٣","٤","٥","٦","٧","٨","٩"],"arabext":["۰","۱","۲","۳","۴","۵","۶","۷","۸","۹"],"bali":["᭐","᭑","᭒","᭓","᭔","᭕","᭖","᭗","᭘","᭙"],"beng":["০","১","২","৩","৪","৫","৬","৭","৮","৯"],"bhks":["𑱐","𑱑","𑱒","𑱓","𑱔","𑱕","𑱖","𑱗","𑱘","𑱙"],"brah":["𑁦","𑁧","𑁨","𑁩","𑁪","𑁫","𑁬","𑁭","𑁮","𑁯"],"cakm":["𑄶","𑄷","𑄸","𑄹","𑄺","𑄻","𑄼","𑄽","𑄾","𑄿"],"cham":["꩐","꩑","꩒","꩓","꩔","꩕","꩖","꩗","꩘","꩙"],"deva":["०","१","२","३","४","५","६","७","८","९"],"diak":["𑥐","𑥑","𑥒","𑥓","𑥔","𑥕","𑥖","𑥗","𑥘","𑥙"],"fullwide":["０","１","２","３","４","５","６","７","８","９"],"gong":["𑶠","𑶡","𑶢","𑶣","𑶤","𑶥","𑶦","𑶧","𑶨","𑶩"],"gonm":["𑵐","𑵑","𑵒","𑵓","𑵔","𑵕","𑵖","𑵗","𑵘","𑵙"],"gujr":["૦","૧","૨","૩","૪","૫","૬","૭","૮","૯"],"guru":["੦","੧","੨","੩","੪","੫","੬","੭","੮","੯"],"hanidec":["〇","一","二","三","四","五","六","七","八","九"],"hmng":["𖭐","𖭑","𖭒","𖭓","𖭔","𖭕","𖭖","𖭗","𖭘","𖭙"],"hmnp":["𞅀","𞅁","𞅂","𞅃","𞅄","𞅅","𞅆","𞅇","𞅈","𞅉"],"java":["꧐","꧑","꧒","꧓","꧔","꧕","꧖","꧗","꧘","꧙"],"kali":["꤀","꤁","꤂","꤃","꤄","꤅","꤆","꤇","꤈","꤉"],"khmr":["០","១","២","៣","៤","៥","៦","៧","៨","៩"],"knda":["೦","೧","೨","೩","೪","೫","೬","೭","೮","೯"],"lana":["᪀","᪁","᪂","᪃","᪄","᪅","᪆","᪇","᪈","᪉"],"lanatham":["᪐","᪑","᪒","᪓","᪔","᪕","᪖","᪗","᪘","᪙"],"laoo":["໐","໑","໒","໓","໔","໕","໖","໗","໘","໙"],"lepc":["᪐","᪑","᪒","᪓","᪔","᪕","᪖","᪗","᪘","᪙"],"limb":["᥆","᥇","᥈","᥉","᥊","᥋","᥌","᥍","᥎","᥏"],"mathbold":["𝟎","𝟏","𝟐","𝟑","𝟒","𝟓","𝟔","𝟕","𝟖","𝟗"],"mathdbl":["𝟘","𝟙","𝟚","𝟛","𝟜","𝟝","𝟞","𝟟","𝟠","𝟡"],"mathmono":["𝟶","𝟷","𝟸","𝟹","𝟺","𝟻","𝟼","𝟽","𝟾","𝟿"],"mathsanb":["𝟬","𝟭","𝟮","𝟯","𝟰","𝟱","𝟲","𝟳","𝟴","𝟵"],"mathsans":["𝟢","𝟣","𝟤","𝟥","𝟦","𝟧","𝟨","𝟩","𝟪","𝟫"],"mlym":["൦","൧","൨","൩","൪","൫","൬","൭","൮","൯"],"modi":["𑙐","𑙑","𑙒","𑙓","𑙔","𑙕","𑙖","𑙗","𑙘","𑙙"],"mong":["᠐","᠑","᠒","᠓","᠔","᠕","᠖","᠗","᠘","᠙"],"mroo":["𖩠","𖩡","𖩢","𖩣","𖩤","𖩥","𖩦","𖩧","𖩨","𖩩"],"mtei":["꯰","꯱","꯲","꯳","꯴","꯵","꯶","꯷","꯸","꯹"],"mymr":["၀","၁","၂","၃","၄","၅","၆","၇","၈","၉"],"mymrshan":["႐","႑","႒","႓","႔","႕","႖","႗","႘","႙"],"mymrtlng":["꧰","꧱","꧲","꧳","꧴","꧵","꧶","꧷","꧸","꧹"],"newa":["𑑐","𑑑","𑑒","𑑓","𑑔","𑑕","𑑖","𑑗","𑑘","𑑙"],"nkoo":["߀","߁","߂","߃","߄","߅","߆","߇","߈","߉"],"olck":["᱐","᱑","᱒","᱓","᱔","᱕","᱖","᱗","᱘","᱙"],"orya":["୦","୧","୨","୩","୪","୫","୬","୭","୮","୯"],"osma":["𐒠","𐒡","𐒢","𐒣","𐒤","𐒥","𐒦","𐒧","𐒨","𐒩"],"rohg":["𐴰","𐴱","𐴲","𐴳","𐴴","𐴵","𐴶","𐴷","𐴸","𐴹"],"saur":["꣐","꣑","꣒","꣓","꣔","꣕","꣖","꣗","꣘","꣙"],"segment":["🯰","🯱","🯲","🯳","🯴","🯵","🯶","🯷","🯸","🯹"],"shrd":["𑇐","𑇑","𑇒","𑇓","𑇔","𑇕","𑇖","𑇗","𑇘","𑇙"],"sind":["𑋰","𑋱","𑋲","𑋳","𑋴","𑋵","𑋶","𑋷","𑋸","𑋹"],"sinh":["෦","෧","෨","෩","෪","෫","෬","෭","෮","෯"],"sora":["𑃰","𑃱","𑃲","𑃳","𑃴","𑃵","𑃶","𑃷","𑃸","𑃹"],"sund":["᮰","᮱","᮲","᮳","᮴","᮵","᮶","᮷","᮸","᮹"],"takr":["𑛀","𑛁","𑛂","𑛃","𑛄","𑛅","𑛆","𑛇","𑛈","𑛉"],"talu":["᧐","᧑","᧒","᧓","᧔","᧕","᧖","᧗","᧘","᧙"],"tamldec":["௦","௧","௨","௩","௪","௫","௬","௭","௮","௯"],"telu":["౦","౧","౨","౩","౪","౫","౬","౭","౮","౯"],"thai":["๐","๑","๒","๓","๔","๕","๖","๗","๘","๙"],"tibt":["༠","༡","༢","༣","༤","༥","༦","༧","༨","༩"],"tirh":["𑓐","𑓑","𑓒","𑓓","𑓔","𑓕","𑓖","𑓗","𑓘","𑓙"],"vaii":["ᘠ","ᘡ","ᘢ","ᘣ","ᘤ","ᘥ","ᘦ","ᘧ","ᘨ","ᘩ"],"wara":["𑣠","𑣡","𑣢","𑣣","𑣤","𑣥","𑣦","𑣧","𑣨","𑣩"],"wcho":["𞋰","𞋱","𞋲","𞋳","𞋴","𞋵","𞋶","𞋷","𞋸","𞋹"]};