tsc is a compiler for converting TypeScript into plain JavaScript.
tsc is a compiler for converting TypeScript into plain JavaScript targeting either the ECMAScript 3 or ECMAScript 5 specifications.
Questions tagged [tsc]
927 questions
10
votes
4 answers
Duplicate string values in TS enum does not cause compilation error?
I have this in a TypeScript enum:
export enum LMXLockRequestError {
MaxRetries = 'bad_args',
BadArgumentsError = 'bad_args',
}
this doesn't seem to cause a compilation error.
It transpiles to this:
var LMXLockRequestError;
(function…
Alexander Mills
- 90,741
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10
votes
1 answer
TypeScripts transpiles files which are non-executable
It appears as though TypeScript is transpiling target files that are not executable.
I have to run chmod u+x after transpilation to get the files to become executable.
This is the case, even if they have a hashbang:
#!/usr/bin/env node
How…
Alexander Mills
- 90,741
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9
votes
2 answers
AWS CodeBuild tsc error TS2307: Cannot find module
I have created a couple different TypeScript cdk pipelines, and they all encounter the same tsc error during the CodeBuild phase.
Two of these pipelines were replicated via the cdk…
Makuziker
- 91
- 1
- 2
9
votes
4 answers
paths from tsconfig.json doesn't work after tsc
In my Express project, I import from paths like @common/foo. Thanks to paths in tsconfig.json, it's just an alias to ../common/src/foo. That's awesome and works in development with this script in nodemon.json:
{
"watch": ["src",…
Itay Ganor
- 3,965
- 3
- 25
- 40
9
votes
2 answers
How to represent nested array with typescript
Say I have an array of strings like:
const a = ['foo', ['aa'], [['zzz',['bar']]]];
export const acceptsArray = (v: Array) : string => {
returns flattenDeep(v).join(' ');
};
besides using Array how can I represent a nested array of…
Alexander Mills
- 90,741
- 139
- 482
- 817
9
votes
1 answer
TS2538: Type 'unique symbol' cannot be used as an index type
I have this:
const symbols = {
typeMap: Symbol('type.map')
}
interface LangMap {
[key: string]: string | true,
golang: string,
typescript: string,
java: string,
swift: string
}
export const setTypeMap = function(v: LangMap) :…
Alexander Mills
- 90,741
- 139
- 482
- 817
9
votes
1 answer
AOT compilation fails when factory function imported from library is used in DI in Angular
I have an Angular 6.1 application, which imports some external module.
When I'm compiling the application in AOT mode:
$ ng build --aot
I'm getting this error:
ERROR in ./src/app.component.ngfactory.js
Module not found: Error: Can't resolve…
Slava Fomin II
- 26,865
- 29
- 124
- 202
9
votes
1 answer
Error MSB4064: The "ComputeInputAndOutputOnly" parameter is not supported by the "VsTsc" task
After upgrading to Typescript 2.7.2 (from 2.4) I get the following error on the build server:
packages\Microsoft.TypeScript.MSBuild.2.7.2\tools\Microsoft.TypeScript.targets(378,7): Error MSB4064: The "ComputeInputAndOutputOnly" parameter is not…
huwjeffries
- 91
- 4
9
votes
1 answer
How to use a compiled TypeScript class in Javascript
Imagine I have this simple TypeScript class, Animal.ts:
export default class Animal {
constructor(public name : string) { }
}
With this tsconfig.json file:
{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"strict":…
Titulum
- 9,928
- 11
- 41
- 79
9
votes
6 answers
npm doesn't update tsc version
Typescript is updated using the following command:
npm install typescript -g
And latest version 2.4.2 is installed correctly and I can verify it by looking the path shown by folloing command:
npm list typescript -g
but the following command shown…
mehran
- 1,314
- 4
- 19
- 33
9
votes
0 answers
tsc with tsconfig does nothing. What am I doing wrong?
My directory has 2 files: a tsconfig.json with simply {} and a hello.ts with a line that says console.log('help!!');.
When I run tsc hello I get the additional hello.js as expected.
If I delete hello.js and run tsc intending to pick up my…
GaryB96
- 371
- 5
- 13
8
votes
0 answers
Can you use tsc to type check multiple typescript projects at once without building them?
In theory, you should be able to do this by using references to make a top-level tsconfig file that includes paths to all of the different typescript projects you want to check, setting "composite": true on the tsconfig.json files for each…
neurodynamic
- 4,294
- 3
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- 39
8
votes
2 answers
tsc does not recognize '--init' option
For some reason npx tsc --init prints out the following error:
$ npx tsc --init
npx: installed 1 in 1.467s
error TS5023: Unknown compiler option 'init'.
I have installed the typescript package with Yarn 2:
$ yarn add -D typescript
➤ YN0000: ┌…
Don Foumare
- 444
- 3
- 13
8
votes
3 answers
"Property ... does not exist on type ..." error when using Typescript
I get the error when compiling a file with typescript:
Property 'qaz' does not exist on type '{ bar: string; }'.
With the following code in the file:
let foo = {
bar: "Can you perform a Quirkafleeg?"
}
let { qaz = "I'm feeling manic!" } =…
Daniel Grace
- 91
- 1
- 1
- 4
8
votes
2 answers
Extending the TypeScript compiler for a DSL
Before I start: yes I do need(/want) a DSL (even if it's just for the experience), there's no other format that expresses what I'm trying to do in a not-terribly-verbose, type-safe way.
Some background information, actual question at the bottom
I…
superbadcodemonkey
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