They are unnecessary in TypeScript and here's why. Your time is over, semicolon! Semicolons in JavaScript are optional due to Automatic Semicolon Insertion (ASI). ... ASI is not straightforward and there are a few situations where omitting a semicolon will lead to an unexpected runtime error.

Are you missing a semicolon TypeScript?

2 Answers. Semicolons are optional in JavaScript - TypeScript is a superset of JavaScript, ergo, semicolons are optional in TypeScript. That said, you will still run into issues with ASI like you would with JavaScript if you don't know where semicolons will be automatically placed.

Is semicolon mandatory in angular?

Where are semicolons optional and where are they required? Firstly, a semicolon is optional only where there is a line break, a closing brace, or the end of the program. Semicolons are not optional between statements appearing on the same line.