chore(app): add cz, commitlint, husky, lint-staged, eslint, prettier

Author: smarlhens

.commitlintrc

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+{
+  "extends": ["@commitlint/config-conventional"]
+}

.czrc

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+{
+  "path": "./node_modules/cz-conventional-changelog"
+}

.eslintignore

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+# /node_modules/* and /bower_components/* in the project root are ignored by default
+
+/public/build

.eslintrc

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+{
+  "env": {
+    "browser": true,
+    "es6": true
+  },
+  "parserOptions": {
+    "ecmaVersion": 2019,
+    "sourceType": "module"
+  },
+  "plugins": ["svelte3"],
+  "extends": ["eslint:recommended"],
+  "overrides": [
+    {
+      "files": ["**/*.svelte"],
+      "processor": "svelte3/svelte3"
+    }
+  ],
+  "rules": {
+    "prettier/prettier": "error",
+    "svelte3/lint-template": 2
+  }
+}

.gitignore

@@ -1,3 +1,96 @@
+
+# Created by https://www.gitignore.io/api/intellij+all
+# Edit at https://www.gitignore.io/?templates=intellij+all
+
+### Intellij+all ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and WebStorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+### Intellij+all Patch ###
+# Ignores the whole .idea folder and all .iml files
+# See https://github.com/joeblau/gitignore.io/issues/186 and https://github.com/joeblau/gitignore.io/issues/360
+
+.idea/
+
+# Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-249601023
+
+*.iml
+modules.xml
+.idea/misc.xml
+*.ipr
+
+# Sonarlint plugin
+.idea/sonarlint
+
+# End of https://www.gitignore.io/api/intellij+all
+
+# Svelte
 /node_modules/
 /public/build/
 

.huskyrc

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+{
+  "hooks": {
+    "pre-commit": "npm run precommit",
+    "commit-msg": "commitlint -E HUSKY_GIT_PARAMS"
+  }
+}

.lintstagedrc

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+{
+  "./**/*.svelte": ["npm run --silent eslint:fix"],
+  "./**/*.{js,css,scss,html,json,*rc,svelte}": ["npm run prettier:write"]
+}

.prettierignore

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+# compiled output
+/public/build

.prettierrc

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+{
+  "printWidth": 120,
+  "tabWidth": 2,
+  "useTabs": false,
+  "semi": true,
+  "singleQuote": true,
+  "quoteProps": "as-needed",
+  "trailingComma": "es5",
+  "bracketSpacing": true,
+  "arrowParens": "always",
+  "htmlWhitespaceSensitivity": "css",
+  "proseWrap": "preserve",
+  "endOfLine": "lf",
+  "overrides": [
+    {
+      "files": "*.scss",
+      "options": {
+        "singleQuote": false
+      }
+    },
+    {
+      "files": "*.json",
+      "options": {
+        "singleQuote": false
+      }
+    },
+    {
+      "files": ".*rc",
+      "options": {
+        "singleQuote": false,
+        "parser": "json"
+      }
+    },
+    {
+      "files": ".svelte",
+      "options": {
+        "semi": false,
+        "plugins": ["prettier-plugin-svelte"]
+      }
+    }
+  ]
+}