fix: replace options.immutable and remove svelte v4 shim

package.json

@@ -76,7 +76,6 @@
   "devDependencies": {
     "@peculiar/webcrypto": "^1.4.3",
     "@rollup/plugin-commonjs": "^25.0.7",
-    "@rollup/plugin-inject": "^5.0.5",
     "@rollup/plugin-node-resolve": "^15.2.3",
     "@rollup/plugin-replace": "^5.0.5",
     "@rollup/plugin-strip": "^3.0.4",
@@ -103,7 +102,6 @@
     "jest-environment-jsdom": "^29.7.0",
     "lint-staged": "^15.1.0",
     "lodash-es": "^4.17.15",
-    "magic-string": "^0.30.5",
     "markdown-table": "^3.0.2",
     "markdown-toc": "^1.2.0",
     "npm-run-all": "^4.1.5",

rollup.config.js

@@ -1,5 +1,3 @@
-import MagicString from 'magic-string'
-import inject from '@rollup/plugin-inject'
 import cjs from '@rollup/plugin-commonjs'
 import resolve from '@rollup/plugin-node-resolve'
 import replace from '@rollup/plugin-replace'
@@ -57,6 +55,7 @@ const baseConfig = {
       'options.context': 'undefined',
       'options.customElement': 'undefined',
       'options.hydrate': 'undefined',
+      'options.immutable': 'undefined',
       'options.intro': 'undefined',
       delimiters: ['', ''],
       preventAssignment: true
@@ -98,28 +97,6 @@ const entryPoints = [
     input: './src/picker/PickerElement.js',
     output: './svelte.js',
     external: ['svelte', 'svelte/internal'],
-    // TODO: drop Svelte v3 support
-    // ensure_array_like was added in Svelte v4 - we shim it to avoid breaking Svelte v3 users
-    plugins: [
-      {
-        name: 'svelte-v3-compat',
-        transform (source) {
-          const magicString = new MagicString(source)
-          magicString.replaceAll('ensure_array_like(', 'ensure_array_like_shim(')
-
-          return {
-            code: magicString.toString(),
-            map: magicString.generateMap()
-          }
-        }
-      },
-      inject({
-        ensure_array_like_shim: [
-          '../../../../shims/svelte-v3-shim.js',
-          'ensure_array_like_shim'
-        ]
-      })
-    ],
     onwarn (warning) {
       if (!warning.message.includes('ensure_array_like')) { // intentionally ignore warning for unused import
         console.warn(warning.message)

shims/svelte-v3-shim.js

@@ -1,9 +0,0 @@
-// TODO: drop Svelte v3 support
-// ensure_array_like was added in Svelte v4 - we shim it to avoid breaking Svelte v3 users
-// this code is copied from svelte v4
-/* eslint-disable camelcase */
-export function ensure_array_like_shim (array_like_or_iterator) {
-  return (array_like_or_iterator && array_like_or_iterator.length !== undefined)
-    ? array_like_or_iterator
-    : Array.from(array_like_or_iterator)
-}

yarn.lock

@@ -723,15 +723,6 @@
     is-reference "1.2.1"
     magic-string "^0.30.3"
 
-"@rollup/plugin-inject@^5.0.5":
-  version "5.0.5"
-  resolved "https://registry.yarnpkg.com/@rollup/plugin-inject/-/plugin-inject-5.0.5.tgz#616f3a73fe075765f91c5bec90176608bed277a3"
-  integrity sha512-2+DEJbNBoPROPkgTDNe8/1YXWcqxbN5DTjASVIOx8HS+pITXushyNiBV56RB08zuptzz8gT3YfkqriTBVycepg==
-  dependencies:
-    "@rollup/pluginutils" "^5.0.1"
-    estree-walker "^2.0.2"
-    magic-string "^0.30.3"
-
 "@rollup/plugin-node-resolve@^15.2.3":
   version "15.2.3"
   resolved "https://registry.yarnpkg.com/@rollup/plugin-node-resolve/-/plugin-node-resolve-15.2.3.tgz#e5e0b059bd85ca57489492f295ce88c2d4b0daf9"
@@ -5469,7 +5460,7 @@ magic-string@^0.27.0:
   dependencies:
     "@jridgewell/sourcemap-codec" "^1.4.13"
 
-magic-string@^0.30.3, magic-string@^0.30.4, magic-string@^0.30.5:
+magic-string@^0.30.3, magic-string@^0.30.4:
   version "0.30.5"
   resolved "https://registry.yarnpkg.com/magic-string/-/magic-string-0.30.5.tgz#1994d980bd1c8835dc6e78db7cbd4ae4f24746f9"
   integrity sha512-7xlpfBaQaP/T6Vh8MO/EqXSW5En6INHEvEXQiuff7Gku0PWjU3uf6w/j9o7O+SpB5fOAkrI5HeoNgwjEO0pFsA==