feature: @putout/plugin-putout: declare-template-variables: no arguments

Author: coderaiser

packages/plugin-putout/lib/declare-template-variables/fixture/no-args-fix.js

@@ -0,0 +1,3 @@
+export const match = () => ({
+    'const __a = __b': ({__a}) => isIdentifier(__a),
+});

packages/plugin-putout/lib/declare-template-variables/fixture/no-args.js

@@ -0,0 +1,4 @@
+export const match = () => ({
+    'const __a = __b': () => isIdentifier(__a),
+});
+

packages/plugin-putout/lib/declare-template-variables/index.js

@@ -17,9 +17,18 @@ export const report = ({node}) => {
 };
 
 export const fix = ({path, node}) => {
-    const [first] = path.node.params;
+    const {params} = path.node;
     const property = objectProperty(node, node, COMPUTED, SHORTHAND);
 
+    if (!params.length) {
+        const properties = [property];
+        
+        params.push(objectPattern(properties));
+        return;
+    }
+    
+    const [first] = params;
+    
     if (isIdentifier(first)) {
         path.node.params[0] = objectPattern([property]);
         return;
@@ -31,6 +40,7 @@ export const fix = ({path, node}) => {
 export const traverse = ({push}) => ({
     '(__a, path) => __b': process(push),
     '(__a) => __b': process(push),
+    '() => __a': process(push),
 });
 
 const process = (push) => (path) => {

packages/plugin-putout/lib/declare-template-variables/index.spec.js

@@ -32,6 +32,11 @@ test('putout: declare-template-variables: transform: arrow-body', (t) => {
     t.end();
 });
 
+test('putout: declare-template-variables: transform: no-args', (t) => {
+    t.transform('no-args');
+    t.end();
+});
+
 test('putout: declare-template-variables: no report: declared', (t) => {
     t.noReport('declared');
     t.end();