CODEWITHSUNDEEP
node.jstypescript
ValeriiVasin
ValeriiVasin

Reputation: 8706

How to write typescript executable file?

Using babel-cli you could easily write some node-executable using es2015 syntax. For that you just need to add proper shebang #!/usr/bin/env babel-node.

For example,

#!/usr/bin/env babel-node

import fs from 'fs';

fs.readFileSync('./some-file.csv');

I am wondering how to do that using TypeScript?

UPDATE: Tried ts-node - getting awkward errors even for HelloWorld examples like

const say = (word: string) => {
    console.log(word);
}

say('hello');

it does not work via ts-node test.ts or using #!/usr/bin/env ts-node;

In both cases i'm getting

SyntaxError: Unexpected token :
at exports.runInThisContext (vm.js:53:16)
at Module._compile (module.js:373:25)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)
at Object.<anonymous> (/usr/local/lib/node_modules/ts-node/src/bin/ts-node.ts:110:12)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)

UPDATE Made ts-node work. It works only if file has .ts extension. For files without extension but with shebang - it does not work. Created github issue for the project that reflects needed behavior.

Upvotes: 5

Views: 6365

Answers (2)

robd
robd

Reputation: 9825

Just to note things have moved on since the approach tried by @ValeriiVasin and the one recommended in @Paarth's answer.

Support for shebangs was officially added in ts-node v8.9.0. The recommended shebang string now includes the -script suffix:

#!/usr/bin/env ts-node-script

Scripts using fs.readFileSync("somefile.json") are working for me with this shebang.

Upvotes: 1

Paarth
Paarth

Reputation: 10377

I believe you are looking for ts-node.

#!/usr/bin/env ts-node

...rest of script

Author confirms this usage working here: https://github.com/TypeStrong/ts-node/issues/73

p.s. I'd call that an executable, not a binary.

Upvotes: 6

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