Initial boiler plate project

node_modules/next/dist/esm/build/babel/plugins/optimize-hook-destructuring.js

@@ -0,0 +1,50 @@
+// matches any hook-like (the default)
+const isHook = /^use[A-Z]/;
+// matches only built-in hooks provided by React et al
+const isBuiltInHook = /^use(Callback|Context|DebugValue|Effect|ImperativeHandle|LayoutEffect|Memo|Reducer|Ref|State)$/;
+export default function({ types: t }) {
+    const visitor = {
+        CallExpression (path, state) {
+            const onlyBuiltIns = state.opts.onlyBuiltIns;
+            // if specified, options.lib is a list of libraries that provide hook functions
+            const libs = state.opts.lib && (state.opts.lib === true ? [
+                "react",
+                "preact/hooks"
+            ] : [].concat(state.opts.lib));
+            // skip function calls that are not the init of a variable declaration:
+            if (!t.isVariableDeclarator(path.parent)) return;
+            // skip function calls where the return value is not Array-destructured:
+            if (!t.isArrayPattern(path.parent.id)) return;
+            // name of the (hook) function being called:
+            const hookName = path.node.callee.name;
+            if (libs) {
+                const binding = path.scope.getBinding(hookName);
+                // not an import
+                if (!binding || binding.kind !== "module") return;
+                const specifier = binding.path.parent.source.value;
+                // not a match
+                if (!libs.some((lib)=>lib === specifier)) return;
+            }
+            // only match function calls with names that look like a hook
+            if (!(onlyBuiltIns ? isBuiltInHook : isHook).test(hookName)) return;
+            path.parent.id = t.objectPattern(path.parent.id.elements.reduce((patterns, element, i)=>{
+                if (element === null) {
+                    return patterns;
+                }
+                return patterns.concat(t.objectProperty(t.numericLiteral(i), // TODO: fix this
+                element));
+            }, []));
+        }
+    };
+    return {
+        name: "optimize-hook-destructuring",
+        visitor: {
+            // this is a workaround to run before preset-env destroys destructured assignments
+            Program (path, state) {
+                path.traverse(visitor, state);
+            }
+        }
+    };
+}
+
+//# sourceMappingURL=optimize-hook-destructuring.js.map