Implement template file detection

Author: Turbo87

lib/__tests__/guess-template.js

@@ -0,0 +1,18 @@
+const { guessTemplatePath } = require('../transform');
+
+describe('guessTemplatePath()', () => {
+  const TESTS = [
+    ['app/components/checkbox.js', 'app/templates/components/checkbox.hbs'],
+    ['app/components/checkbox/component.js', 'app/components/checkbox/template.hbs'],
+    [
+      'app/components/nested/sub/component/component.js',
+      'app/components/nested/sub/component/template.hbs',
+    ],
+  ];
+
+  for (let [input, expected] of TESTS) {
+    test(input, () => {
+      expect(guessTemplatePath(input)).toEqual(expected);
+    });
+  }
+});

lib/transform.js

@@ -1,4 +1,5 @@
 const fs = require('fs');
+const path = require('path');
 const stringUtils = require('ember-cli-string-utils');
 const j = require('jscodeshift').withParser('ts');
 const debug = require('debug')('tagless-ember-components-codemod');
@@ -120,8 +121,11 @@ function transform(componentPath) {
   let classNameBindings = findClassNameBindings(properties);
   debug(`${componentPath}: classNameBindings: %o`, classNameBindings);
 
-  // TODO find corresponding template files
-  // TODO skip if not found (warn)
+  let templatePath = guessTemplatePath(componentPath);
+  if (!fs.existsSync(templatePath)) {
+    throw new SilentError(`Could not find template at ${templatePath}`);
+  }
+  debug(`${componentPath}: templatePath: %o`, templatePath);
 
   // TODO set `tagName: ''` and remove `attributeBindings`, `classNames`, ...
   // TODO wrap existing template with root element
@@ -212,11 +216,21 @@ function findClassNameBindings(properties) {
   return classNameBindings;
 }
 
+function guessTemplatePath(componentPath) {
+  let isPods = path.basename(componentPath) === 'component.js';
+  if (isPods) {
+    return path.dirname(componentPath) + '/template.hbs';
+  }
+
+  return componentPath.replace('/components/', '/templates/components/').replace(/\.js$/, '.hbs');
+}
+
 module.exports = {
   transform,
   findTagName,
   findElementId,
   findAttributeBindings,
   findClassNames,
   findClassNameBindings,
+  guessTemplatePath,
 };