From 6d31917da8927bbdfefd78686fba5856e8085cc3 Mon Sep 17 00:00:00 2001
From: Alexey Mulyukin <alexey.mulyukin@arcadia.spb.ru>
Date: Thu, 20 Aug 2020 12:48:43 +0300
Subject: [PATCH] - [Fixed] Fix issue #6 (Build a correct component name from a
 file name)

---
 CHANGELOG.md                                 |  4 +++
 lib/utils.js                                 | 23 +++++++++++++
 lib/v3/parser.js                             |  2 +-
 test/svelte3/integration/basic/basic.spec.js |  2 +-
 test/unit/helpers/utils.spec.js              | 34 ++++++++++++++++++++
 5 files changed, 63 insertions(+), 2 deletions(-)
 create mode 100644 test/unit/helpers/utils.spec.js

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 323610a..9c91280 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how
 
 ## UNRELEASED
 
+- 🛠 [Fixed] Fix issue #6 (Build a correct component name from a file name)
+```
+round.button.svelte -> RoundButton
+```
 - 🛠 [Fixed] Fix issue #27 (Events is not exposed from exported functions and arrow functions)
 
 ## [3.0.1] 17.08.2020
diff --git a/lib/utils.js b/lib/utils.js
index 0377a80..ebf2912 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -226,6 +226,28 @@ const unCamelcase = (text) => {
     return chars.join('');
 };
 
+const buildCamelCase = (text) => {
+    return text.split('').reduce((state, char) => {
+        const isLegal = /[a-zA-Z]/.test(char);
+        const isNumeric = /[0-9]/.test(char);
+
+        if (isLegal || isNumeric) {
+            if (state.chars.length === 0 || !state.prevIsLegal) {
+                state.chars.push(char.toUpperCase());
+            } else {
+                state.chars.push(char);
+            }
+        }
+
+        state.prevIsLegal = isLegal;
+
+        return state;
+    }, {
+        chars: [],
+        prevIsLegal: false
+    }).chars.join('');
+};
+
 const getDependencies = (ast, source) => {
     const dependencies = [];
 
@@ -277,3 +299,4 @@ module.exports.getDependencies = getDependencies;
 module.exports.escapeImportKeyword = escapeImportKeyword;
 module.exports.inferTypeFromVariableDeclaration = inferTypeFromVariableDeclaration;
 module.exports.isTopLevelComment = isTopLevelComment;
+module.exports.buildCamelCase = buildCamelCase;
diff --git a/lib/v3/parser.js b/lib/v3/parser.js
index 3bb4c95..58652c5 100644
--- a/lib/v3/parser.js
+++ b/lib/v3/parser.js
@@ -94,7 +94,7 @@ class Parser extends EventEmitter {
         }
 
         if (this.componentName) {
-            this.emit('name', utils.unCamelcase(this.componentName));
+            this.emit('name', utils.buildCamelCase(this.componentName));
         }
     }
 
diff --git a/test/svelte3/integration/basic/basic.spec.js b/test/svelte3/integration/basic/basic.spec.js
index ff37e78..841986f 100644
--- a/test/svelte3/integration/basic/basic.spec.js
+++ b/test/svelte3/integration/basic/basic.spec.js
@@ -13,7 +13,7 @@ describe('SvelteDoc v3 - Basic', () => {
             ignoredVisibilities: []
         }).then((doc) => {
             expect(doc, 'Document should be provided').to.exist;
-            expect(doc.name, 'Document should have proper name').to.equal('basic.name');
+            expect(doc.name, 'Document should have proper name').to.equal('BasicName');
 
             done();
         }).catch(e => {
diff --git a/test/unit/helpers/utils.spec.js b/test/unit/helpers/utils.spec.js
new file mode 100644
index 0000000..a6fd618
--- /dev/null
+++ b/test/unit/helpers/utils.spec.js
@@ -0,0 +1,34 @@
+const utils = require('../../../lib/utils');
+const { expect } = require('chai');
+
+describe('"utils.js" module', () => {
+    describe('"buildCamelCase" method', () => {
+        it('when input is already camel cased then should return same value', done => {
+            const result = utils.buildCamelCase('CamelCasedTestMethodName12');
+
+            expect(result).be.equal('CamelCasedTestMethodName12');
+            done();
+        });
+
+        it('when spaces used in name then should remove them and make next char uppercased', done => {
+            const result = utils.buildCamelCase('Spaces In the name');
+
+            expect(result).be.equal('SpacesInTheName');
+            done();
+        });
+
+        it('when first letter is lowercased then should be changed to upper case', done => {
+            const result = utils.buildCamelCase('lowercasedFirstLetter');
+
+            expect(result).be.equal('LowercasedFirstLetter');
+            done();
+        });
+
+        it('when illegal chars in name then should remove then and make next char uppercased', done => {
+            const result = utils.buildCamelCase('Illegal-chars-In-the-name');
+
+            expect(result).to.be.equal('IllegalCharsInTheName');
+            done();
+        });
+    });
+});