Typescript

Definition files

E.G. angular.d.ts -> Use such file, then we can use angularJS in Typescript & get its language Intellisense

d.ts files (Type Definitions for external JS libs, aka Typings),

xxx.js.map

Debug typescript

tsd files

default : tsd.d.ts ('tsd' can be changed)

http://www.johnpapa.net/intellisense-witha-visual-studio-code/

https://github.com/DefinitelyTyped/tsd/issues/116

`import / from` or `import / require` or `/// <reference`

keyword : module loader - RequireJS / SystemJS / Webpack / Browserify,

https://github.com/Microsoft/TypeScript/issues/2242

http://stackoverflow.com/questions/28989399/do-i-have-to-reference-typescript-definition-in-every-file

http://stackoverflow.com/questions/32151141/webstormtypescript-how-to-use-without-reference-path

tsconfig.json

The presence of a tsconfig.json file in a directory indicates that the directory is the root of a TypeScript project.

By invoking tsc with no input files and a -project (or just -p) command line option that specifies the path of a directory containing a tsconfig.json file.

es6 to es5

Use typescript can do such things

.d.ts

to compile .ts, we need .d.ts

https://blog.othree.net/log/2014/12/04/typescript-definition/

http://blog.miniasp.com/post/2015/06/08/Using-Visual-Studio-Code-with-AngularJS.aspx

https://en.wikipedia.org/wiki/TypeScript

http://www.typescriptlang.org/Handbook#writing-dts-files

http://stackoverflow.com/questions/33989459/typescript-use-lib-core-es6-d-ts