feature: @putout/engine-loader: rules: parse-rules: throw if passed array instead of object

Author: coderaiser

packages/engine-loader/lib/rules/parse-rules.js

@@ -29,6 +29,8 @@ module.exports.parseRules = (rules) => {
     const plugin = null;
     const msg = '';
 
+    check(rules);
+    
     for (const [rule, value] of entries(rules)) {
         if (isStr(value)) {
             result.push({
@@ -128,3 +130,8 @@ module.exports.enableNestedRules = (rules) => {
 
     return newRules;
 };
+
+function check(rules) {
+    if (isArray(rules))
+        throw Error(`☝️Looks like type of 'rules' passed to @putout/engine-loader is 'array', expected: 'object'.`);
+}

packages/engine-loader/lib/rules/parse-rules.spec.js

@@ -25,6 +25,17 @@ test('putout: loader: parse rules: tuple: two: array', (t) => {
     t.end();
 });
 
+test('putout: loader: parse rules: array', (t) => {
+    const [error] = tryCatch(parseRules, [
+        ['on', {}],
+    ]);
+    
+    const expected = `☝️Looks like type of 'rules' passed to @putout/engine-loader is 'array', expected: 'object'.`;
+    
+    t.equal(error.message, expected);
+    t.end();
+});
+
 test('putout: loader: parse rules: tuple: two: boolean', (t) => {
     const [{state}] = parseRules({
         hello: [false, {}],