improve test coverage part 2/2 (#22)

* fix styling + homemade jsonToXML

* add threshold for code coverage

* add tests for getChartBar method

* add tests for getChartLabels method

* add tests for getChartLegend method

* add tests for getChart and getScale method

README.md

@@ -7,14 +7,14 @@
 First you'll have to install `mjml-bar-chart` in your project.
 
 ```sh
-npm i -S @freezystem/mjml-bar-chart
+npm install --save-dev mjml @freezystem/mjml-bar-chart
 ```
 
 Then add the package to your `.mjmlconfig` file:
 
 ```json
 {
-	"packages": ["mjml-bar-chart/build/index.js"]
+  "packages": ["@freezystem/mjml-bar-chart/build/index.js"]
 }
 ```
 

package.json

@@ -23,7 +23,7 @@
 			"types": "./build/types/index.d.ts",
 			"require": "./build/index.js",
 			"import": "./build/esm/index.js",
-			"default": "./build/index.js"
+			"default": "./src/index.ts"
 		}
 	},
 	"files": [
@@ -55,7 +55,7 @@
 		"@types/mjml": "^4.7.4",
 		"@types/mjml-core": "^4.7.4",
 		"@types/mjml-validator": "^4.13.4",
-		"@types/node": "^20.10.3",
+		"@types/node": "^20.10.4",
 		"jest": "^29.7.0",
 		"npm-check": "^6.0.1",
 		"prettier": "^3.1.0",
@@ -75,6 +75,14 @@
 			"text-summary",
 			"json-summary"
 		],
+		"coverageThreshold": {
+			"global": {
+				"branches": 90,
+				"functions": 95,
+				"lines": 95,
+				"statements": 95
+			}
+		},
 		"preset": "ts-jest",
 		"testEnvironment": "node",
 		"reporters": [