new: Update options for Babel plugins/presets. (#160)

* Update options. * Update tests.
milesj · Nov 1, 2022 · c47ff00 · c47ff00
1 parent d0d95f5
commit c47ff00
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Showing 2 changed files with 24 additions and 2 deletions.
diff --git a/packages/packemon/src/babel/config.ts b/packages/packemon/src/babel/config.ts
@@ -117,18 +117,23 @@ export function getBabelInputConfig(
 ): Omit<ConfigStructure, 'exclude' | 'include'> {
 	const plugins: PluginItem[] = [];
 	const presets: PluginItem[] = [];
+	const tsOptions = {
+		allowDeclareFields: true,
+		onlyRemoveTypeImports: true,
+		optimizeConstEnums: true,
+	};
 
 	if (features.flow) {
 		presets.push([resolve('@babel/preset-flow'), { allowDeclareFields: true }]);
 	}
 
 	if (features.typescript) {
-		presets.push([resolve('@babel/preset-typescript'), { allowDeclareFields: true }]);
+		presets.push([resolve('@babel/preset-typescript'), tsOptions]);
 
 		// When decorators are used, class properties must be loose
 		if (features.decorators) {
 			plugins.push(
-				[resolve('@babel/plugin-transform-typescript'), { allowDeclareFields: true }],
+				[resolve('@babel/plugin-transform-typescript'), tsOptions],
 				[resolve('@babel/plugin-proposal-decorators'), { legacy: true }],
 				[resolveFromBabel('@babel/plugin-proposal-class-properties'), { loose: true }],
 				[resolveFromBabel('@babel/plugin-proposal-private-methods'), { loose: true }],
@@ -141,8 +146,11 @@ export function getBabelInputConfig(
 		presets.push([
 			resolve('@babel/preset-react'),
 			{
+				// development: __DEV__,
 				runtime: features.react,
 				throwIfNamespace: true,
+				useBuiltIns: true,
+				useSpread: true,
 			},
 		]);
 	}

diff --git a/packages/packemon/tests/babel/__snapshots__/config.test.ts.snap b/packages/packemon/tests/babel/__snapshots__/config.test.ts.snap
@@ -72,6 +72,8 @@ exports[`getBabelInputConfig() includes react preset if \`react\` feature flag i
     {
       "runtime": "classic",
       "throwIfNamespace": true,
+      "useBuiltIns": true,
+      "useSpread": true,
     },
   ],
 ]
@@ -84,6 +86,8 @@ exports[`getBabelInputConfig() includes react preset if \`react\` feature flag i
     {
       "runtime": "automatic",
       "throwIfNamespace": true,
+      "useBuiltIns": true,
+      "useSpread": true,
     },
   ],
 ]
@@ -112,6 +116,8 @@ exports[`getBabelInputConfig() includes typescript decorators if \`typescript\`
       "@babel/plugin-transform-typescript",
       {
         "allowDeclareFields": true,
+        "onlyRemoveTypeImports": true,
+        "optimizeConstEnums": true,
       },
     ],
     [
@@ -144,6 +150,8 @@ exports[`getBabelInputConfig() includes typescript decorators if \`typescript\`
       "@babel/preset-typescript",
       {
         "allowDeclareFields": true,
+        "onlyRemoveTypeImports": true,
+        "optimizeConstEnums": true,
       },
     ],
   ],
@@ -156,6 +164,8 @@ exports[`getBabelInputConfig() includes typescript preset if \`typescript\` feat
     "@babel/preset-typescript",
     {
       "allowDeclareFields": true,
+      "onlyRemoveTypeImports": true,
+      "optimizeConstEnums": true,
     },
   ],
 ]
@@ -178,6 +188,8 @@ exports[`getBabelInputConfig() supports private properties with decorators if de
       "@babel/plugin-transform-typescript",
       {
         "allowDeclareFields": true,
+        "onlyRemoveTypeImports": true,
+        "optimizeConstEnums": true,
       },
     ],
     [
@@ -210,6 +222,8 @@ exports[`getBabelInputConfig() supports private properties with decorators if de
       "@babel/preset-typescript",
       {
         "allowDeclareFields": true,
+        "onlyRemoveTypeImports": true,
+        "optimizeConstEnums": true,
       },
     ],
   ],