• The following standards are inspired from Coding guidelines for TypeScript.

• Use PascalCase for type names.
• Use I as a prefix for interface names only when an interface is implemented by a class.
• Use PascalCase for enum values.
• Use camelCase for function names.
• Use camelCase for property names and local variables.
• Do not use _ as a prefix for private properties (unless used as backing properties).
• Use whole words in names when possible.

• Do not export types/functions unless you need to share it across multiple components.
• Do not introduce new types/values to the global namespace.
• Shared types should be defined in types.ts. Within a file, type definitions should come first.

Use undefined. Do not use null.

• Comments must end with a period.
• Use JSDoc style comments for functions, interfaces, enums, and classes.

Use single quotes for strings.

• Use arrow functions over anonymous function expressions.

• Always surround loop and conditional bodies with curly braces. Statements on the same line are allowed to omit braces.

• Open curly braces always go on the same line as whatever necessitates them.

• Parenthesized constructs should have no surrounding whitespace.

• A single space follows commas, colons, and semicolons in those constructs. For example:

  • for (var i = 0, n = str.length; i < 10; i++) { }
  • if (x < 10) { }
  • function f(x: number, y: string): void { }

• else goes on the same line from the closing curly brace.

• Use 4 spaces per indentation.

• All files must end with an empty line.