chore(mf2): Set --rewriteRelativeImportExtensions and use .ts in sources

Author: XM5jDcsHTyGJtQqlCi

eslint.config.mjs

@@ -68,6 +68,22 @@ export default [
       '@typescript-eslint/no-unused-vars': ['warn', { argsIgnorePattern: '^_' }]
     }
   },
+  {
+    files: ['mf2/**/*ts'],
+    rules: {
+      'no-restricted-imports': [
+        'error',
+        {
+          patterns: [
+            {
+              regex: '^\\..*(?<!\\.ts)$',
+              message: 'Relative imports must use .ts extension.'
+            }
+          ]
+        }
+      ]
+    }
+  },
   {
     files: ['test/browser/tests/*.js'],
     languageOptions: { globals: { ...globals.mocha } }

mf2/fluent/src/fluent-to-resource.ts

@@ -3,12 +3,12 @@ import { Message, MessageFormat, MessageFormatOptions } from 'messageformat';
 import {
   FluentToMessageOptions,
   fluentToMessage
-} from './fluent-to-message.js';
-import { getFluentFunctions } from './functions.js';
+} from './fluent-to-message.ts';
+import { getFluentFunctions } from './functions.ts';
 import type {
   FluentMessageResource,
   FluentMessageResourceData
-} from './index.js';
+} from './index.ts';
 
 /**
  * Compile a Fluent resource (i.e. an FTL file) into a Map of

mf2/fluent/src/fluent.test.ts

@@ -24,9 +24,9 @@
 import * as Fluent from '@fluent/syntax';
 import { source } from '~/test/utils/source.js';
 import { PatternMessage, SelectMessage, validate } from 'messageformat';
-import { fluentToResource, fluentToResourceData } from './index.js';
-import { messageToFluent } from './message-to-fluent.js';
-import { resourceToFluent } from './resource-to-fluent.js';
+import { fluentToResource, fluentToResourceData } from './index.ts';
+import { messageToFluent } from './message-to-fluent.ts';
+import { resourceToFluent } from './resource-to-fluent.ts';
 
 type TestCase = {
   locale?: string;

mf2/fluent/src/functions.ts

@@ -4,8 +4,8 @@ import type {
   MessageValue
 } from 'messageformat/functions';
 import { DraftFunctions, getLocaleDir } from 'messageformat/functions';
-import type { FluentMessageResource } from './index.js';
-import { valueToMessageRef } from './message-to-fluent.js';
+import type { FluentMessageResource } from './index.ts';
+import { valueToMessageRef } from './message-to-fluent.ts';
 
 /**
  * Build a {@link messageformat#MessageFormat} runtime to use with Fluent messages.

mf2/fluent/src/index.ts

@@ -25,15 +25,15 @@ export type FluentMessageResourceData = Map<string, Map<string, Message>>;
 export {
   type FluentToMessageOptions,
   fluentToMessage
-} from './fluent-to-message.js';
+} from './fluent-to-message.ts';
 export {
   fluentToResource,
   fluentToResourceData
-} from './fluent-to-resource.js';
+} from './fluent-to-resource.ts';
 export {
   defaultFunctionMap,
   FluentMessageRef,
   messageToFluent
-} from './message-to-fluent.js';
-export { resourceToFluent } from './resource-to-fluent.js';
-export { getFluentFunctions } from './functions.js';
+} from './message-to-fluent.ts';
+export { resourceToFluent } from './resource-to-fluent.ts';
+export { getFluentFunctions } from './functions.ts';

mf2/fluent/src/resource-to-fluent.ts

@@ -1,7 +1,7 @@
 import * as Fluent from '@fluent/syntax';
 import type { Message } from 'messageformat';
-import type { FluentMessageResourceData } from './index.js';
-import { FunctionMap, messageToFluent } from './message-to-fluent.js';
+import type { FluentMessageResourceData } from './index.ts';
+import { FunctionMap, messageToFluent } from './message-to-fluent.ts';
 
 /**
  * Convert a Map of {@link messageformat#Message} data objects into a

mf2/icu-messageformat-1/src/index.ts

@@ -1,3 +1,3 @@
-export { getMF1Functions } from './functions.js';
-export { MF1Options, mf1ToMessage } from './mf1-to-message.js';
-export { mf1ToMessageData } from './mf1-to-message-data.js';
+export { getMF1Functions } from './functions.ts';
+export { MF1Options, mf1ToMessage } from './mf1-to-message.ts';
+export { mf1ToMessageData } from './mf1-to-message-data.ts';

mf2/icu-messageformat-1/src/mf1-to-message.ts

@@ -1,7 +1,7 @@
 import { Token, parse } from '@messageformat/parser';
 import { Message, MessageFormat, MessageFormatOptions } from 'messageformat';
-import { getMF1Functions } from './functions.js';
-import { mf1ToMessageData } from './mf1-to-message-data.js';
+import { getMF1Functions } from './functions.ts';
+import { mf1ToMessageData } from './mf1-to-message-data.ts';
 
 /** @beta */
 export type MF1Options = {

mf2/icu-messageformat-1/src/mf1.test.ts

@@ -1,6 +1,6 @@
 import { parse } from '@messageformat/parser';
 import { validate } from 'messageformat';
-import { mf1ToMessage, mf1ToMessageData } from './index.js';
+import { mf1ToMessage, mf1ToMessageData } from './index.ts';
 
 export type TestCase = {
   locale?: string;

mf2/messageformat/src/cst/declarations.ts

@@ -1,8 +1,8 @@
-import { parseExpression } from './expression.js';
-import type { ParseContext } from './parse-cst.js';
-import type * as CST from './types.js';
-import { whitespaces } from './util.js';
-import { parseVariable } from './values.js';
+import { parseExpression } from './expression.ts';
+import type { ParseContext } from './parse-cst.ts';
+import type * as CST from './types.ts';
+import { whitespaces } from './util.ts';
+import { parseVariable } from './values.ts';
 
 export function parseDeclarations(
   ctx: ParseContext,