wip(core): transpile Optional Chaining & Nullish Coalescing Operator

Author: FranckFreiburger

package.json

@@ -40,6 +40,8 @@
     "@babel/generator": "^7.13.9",
     "@babel/parser": "^7.13.11",
     "@babel/plugin-proposal-dynamic-import": "^7.13.8",
+    "@babel/plugin-proposal-nullish-coalescing-operator": "^7.13.8",
+    "@babel/plugin-proposal-optional-chaining": "^7.13.12",
     "@babel/plugin-transform-arrow-functions": "^7.13.0",
     "@babel/plugin-transform-modules-commonjs": "^7.13.8",
     "@babel/plugin-transform-runtime": "^7.13.10",

src/createVue2SFCModule.ts

@@ -28,6 +28,13 @@ import jsx from '@vue/babel-plugin-transform-vue-jsx'
 // @ts-ignore
 import babelSugarInjectH from '@vue/babel-sugar-inject-h'
 
+// @ts-ignore
+import pluginProposalOptionalChaining from "@babel/plugin-proposal-optional-chaining"
+
+// @ts-ignore
+import pluginProposalNullishCoalescingOperator from '@babel/plugin-proposal-nullish-coalescing-operator'
+
+
 import {
 	formatError,
 	formatErrorStartEnd,
@@ -178,6 +185,8 @@ export async function createSFCModule(source : string, filename : AbstractPath,
 				plugins: [ // https://babeljs.io/docs/en/options#plugins
 					babelPluginTransformModulesCommonjs, // https://babeljs.io/docs/en/babel-plugin-transform-modules-commonjs#options
 					jsx,
+					pluginProposalOptionalChaining,
+					pluginProposalNullishCoalescingOperator,
 					babelSugarInjectH,
 					...additionalBabelPlugins,
 				],

src/createVue3SFCModule.ts

@@ -30,6 +30,13 @@ import babelPluginTransformModulesCommonjs from '@babel/plugin-transform-modules
 // https://github.com/vuejs/jsx-next
 import jsx from '@vue/babel-plugin-jsx'
 
+// @ts-ignore
+import pluginProposalOptionalChaining from "@babel/plugin-proposal-optional-chaining"
+
+// @ts-ignore
+import pluginProposalNullishCoalescingOperator from '@babel/plugin-proposal-nullish-coalescing-operator'
+
+
 import {
 	formatErrorLineColumn,
 	formatError,
@@ -198,6 +205,8 @@ export async function createSFCModule(source : string, filename : AbstractPath,
 				plugins: [ // https://babeljs.io/docs/en/options#plugins
 					babelPluginTransformModulesCommonjs, // https://babeljs.io/docs/en/babel-plugin-transform-modules-commonjs#options
 					jsx,
+					pluginProposalOptionalChaining,
+					pluginProposalNullishCoalescingOperator,
 					...additionalBabelPlugins,
 				],
 				babelrc: false,

yarn.lock

@@ -347,6 +347,15 @@
     "@babel/helper-plugin-utils" "^7.13.0"
     "@babel/plugin-syntax-optional-catch-binding" "^7.8.3"
 
+"@babel/plugin-proposal-optional-chaining@^7.13.12":
+  version "7.13.12"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-optional-chaining/-/plugin-proposal-optional-chaining-7.13.12.tgz#ba9feb601d422e0adea6760c2bd6bbb7bfec4866"
+  integrity sha512-fcEdKOkIB7Tf4IxrgEVeFC4zeJSTr78no9wTdBuZZbqF64kzllU0ybo2zrzm7gUQfxGhBgq4E39oRs8Zx/RMYQ==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.13.0"
+    "@babel/helper-skip-transparent-expression-wrappers" "^7.12.1"
+    "@babel/plugin-syntax-optional-chaining" "^7.8.3"
+
 "@babel/plugin-proposal-optional-chaining@^7.13.8":
   version "7.13.8"
   resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-optional-chaining/-/plugin-proposal-optional-chaining-7.13.8.tgz#e39df93efe7e7e621841babc197982e140e90756"