How to install and run Typescript locally in npm

Question

I want to install and run Typescript  i e  no global dependencies    Here is my package json file        name    foo      version    1 0 0      description          main    index js      scripts          test    echo   Error  no test specified    amp  amp  exit 1        tsc    tsc          devDependencies          typescript     1 8 10          author          license    ISC      I then run   npm install npm run tsc   However when I run the second command I get sooo many errors it cannot display all it  Most of it is like the following      foo node modules typescript lib lib d ts 5015 5   error TS2300  Duplicate identifier  webkitTransformOrigin      foo node modules typescript lib lib d ts 5016 5   error TS2300  Duplicate identifier  webkitTransformStyle      foo node modules typescript lib lib d ts 5017 5   error TS2300  Duplicate identifier  webkitTransition      foo node modules typescript lib lib d ts 5018 5   error TS2300  Duplicate identifier  webkitTransitionDelay      foo node modules typescript lib lib d ts 5019 5   error TS2300  Duplicate identifier  webkitTransitionDuration      foo node modules typescript lib lib d ts 5020 5   error TS2300  Duplicate identifier  webkitTransitionProperty     In npm-debug log I get   0 info it worked if it ends with ok 1 verbose cli     usr bin nodejs     usr bin npm    run    tsc    2 info using npm 3 10 2 3 info using node v5 12 0 4 verbose run-script    pretsc    tsc    posttsc    5 info lifecycle foo 1 0 0 pretsc  foo 1 0 0 6 silly lifecycle foo 1 0 0 pretsc  no script for pretsc  continuing 7 info lifecycle foo 1 0 0 tsc  foo 1 0 0 8 verbose lifecycle foo 1 0 0 tsc  unsafe-perm in lifecycle true 9 verbose lifecycle foo 1 0 0 tsc  PATH   usr lib node modules npm bin node-gyp-bin  home vagrant foo node modules  bin  usr bin  usr local sbin  usr local bin  usr sbin  usr bin  sbin  bin  usr games  usr local games 10 verbose lifecycle foo 1 0 0 tsc  CWD   home vagrant foo 11 silly lifecycle foo 1 0 0 tsc  Args     -c    tsc    12 silly lifecycle foo 1 0 0 tsc  Returned  code  2  signal  null 13 info lifecycle foo 1 0 0 tsc  Failed to exec tsc script 14 verbose stack Error  foo 1 0 0 tsc   tsc  14 verbose stack Exit status 2 14 verbose stack     at EventEmitter  lt anonymous gt    usr lib node modules npm lib utils lifecycle js 242 16  14 verbose stack     at emitTwo  events js 100 13  14 verbose stack     at EventEmitter emit  events js 185 7  14 verbose stack     at ChildProcess  lt anonymous gt    usr lib node modules npm lib utils spawn js 40 14  14 verbose stack     at emitTwo  events js 100 13  14 verbose stack     at ChildProcess emit  events js 185 7  14 verbose stack     at maybeClose  internal child process js 850 16  14 verbose stack     at Process ChildProcess  handle onexit  internal child process js 215 5  15 verbose pkgid foo 1 0 0 16 verbose cwd  home vagrant foo 17 error Linux 3 13 0-88-generic 18 error argv   usr bin nodejs    usr bin npm   run   tsc  19 error node v5 12 0 20 error npm  v3 10 2 21 error code ELIFECYCLE 22 error foo 1 0 0 tsc   tsc  22 error Exit status 2 23 error Failed at the foo 1 0 0 tsc script  tsc   23 error Make sure you have the latest version of node js and npm installed  23 error If you do  this is most likely a problem with the foo package  23 error not with npm itself  23 error Tell the author that this fails on your system  23 error     tsc 23 error You can get information on how to open an issue for this project with  23 error     npm bugs foo 23 error Or if that isn t available  you can get their info via  23 error     npm owner ls foo 23 error There is likely additional logging output above  24 verbose exit   1  true     Note that removing the package and then installing typescript globally solves the problem  However if I then use npm install to install the local packages again  it reintroduces the problem

User · Answer

As of npm 5 2 0  once you ve installed locally via  npm i typescript --save-dev      you no longer need an entry in the scripts section of package json -- you can now run the compiler with npx   npx tsc   Now you don t have to update your package json file every time you want to compile with different arguments

User · Answer

You need to tell npm that  tsc  exists as a local project package  via the  scripts  property in your package json  and then run it via npm run tsc  To do that  at least on Mac  I had to add the path for the actual compiler within the package  like this       name    foo     scripts          tsc      node modules typescript bin tsc          dependencies          typescript     2 3 3        typings     2 1 1          After that you can run any TypeScript command like npm run tsc -- --init  the arguments come after the first --

User · Answer

Note if you are using typings do the following   rm -r typings typings install   If your doing the angular 2 tutorial use this   rm -r typings npm run postinstall npm start   if the postinstall command dosen t work  try installing typings globally like so   npm install -g typings   you can also try the following as opposed to postinstall   typings install   and you should have this issue fixed

User · Answer

It took me a while to figure out the solution to this problem - it s in the original question  You need to have a script that calls tsc in your package json file so that you can run   npm run tsc    Include -- before you pass in options  or just include them in the script    npm run tsc -- -v   Here s an example package json        name    foo      scripts          tsc    tsc          dependencies          typescript     1 8 10

User · Answer

You can now use ts-node  which makes your life as simple as  npm install -D ts-node npm install -D typescript  ts-node script ts

User · Answer

To install TypeScript local in project as a development dependency you can use --save-dev key  npm install --save-dev typescript   It s also writes the typescript into your package json  You also need to have a tsconfig json file  For example       compilerOptions          target    ES5        module    system        moduleResolution    node        sourceMap   true       emitDecoratorMetadata   true       experimentalDecorators   true       removeComments   false       noImplicitAny   false         exclude          node modules         npm          For more information about the tsconfig you can see here http   www typescriptlang org docs handbook tsconfig-json html

User · Answer

tsc requires a config file or  ts x  files to compile    To solve both of your issues  create a file called tsconfig json with the following contents          compilerOptions              outFile          built local tsc js              exclude              node modules            Also  modify your npm run with this  tsc --config  path to a tsconfig json

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