Use json2js build rule instead of import assertion

eslint.config.js

@@ -5,8 +5,8 @@ import globals from 'globals';
 export default [
   {
     ignores: [
-      'unused/*.js',
-      'static/i/hebcal-app-*.min.js',
+      'src/*.json.js',
+      'dist',
     ],
   },
   js.configs.recommended,

package.json

@@ -45,7 +45,9 @@
     "transliteration": "^2.3.5"
   },
   "scripts": {
-    "build": "rollup -c",
+    "build:rollup": "rollup -c",
+    "build:json2js": "for f in src/*.json; do echo 'export default' > $f.js && cat $f >> $f.js; done",
+    "build": "npm run build:json2js && npm run build:rollup",
     "prepublish": "npm run build",
     "readme": "npx jsdoc2md dist/index.js",
     "test": "ava"

src/geodb.js

@@ -1,7 +1,7 @@
 import Database from 'better-sqlite3';
 import {Location} from '@hebcal/core';
 import '@hebcal/cities';
-import city2geonameid from './city2geonameid.json' with {type: "json"};
+import city2geonameid from './city2geonameid.json.js';
 import {transliterate} from 'transliteration';
 import {munge} from './munge.js';
 

src/geodb.spec.js

@@ -7,7 +7,7 @@ import os from 'os';
 import fs from 'fs';
 import path from 'path';
 import pino from 'pino';
-import legacyCities from './legacy.json' with {type: "json"};
+import legacyCities from './legacy.json.js';
 import {makeDummyZipsDb} from './makeDummyZipsDb.js';
 import {makeDummyInfoTxt} from './makeDummyInfoTxt.js';
 import {munge} from './munge.js';