Initial commit.

javascript-practice/src/rSpreadOperator/spreadOperator.js

...script-practice/src/rSpreadOperator/spreadOperator.key.js

...cript-practice/src/rSpreadOperator/spreadOperator.test.js

javascript-practice/src/sArrowFunctions/arrowFunctions.js

...script-practice/src/sArrowFunctions/arrowFunctions.key.js

...cript-practice/src/sArrowFunctions/arrowFunctions.test.js

package-lock.json

package.json