Can the TypeScript version be extracted from a TS file in a remote environment?

Question

Can the TypeScript version be extracted from a TS file in a remote environment?

When working in a Ruby environment, you can access the defined constant RUBY_VERSION.

Is there an equivalent to this in TypeScript that I can reference within a script without needing direct access to the system? I know that if I were running the code on my own computer, I could check the TypeScript compiler version by using the command tsc -V for local scenarios or through a Node environment, but that's not ideal. Ideally, I would like something similar to the example below:

e.g. console.log(TS_VERSION) // printVersion.ts

Unfortunately, the execution environment I'm currently using (leetcode) is detached and does not provide information about which version of TypeScript they are running. They do allow me to print to stdout though. The target environment is node 14.x.

I have already checked this page on LeetCode, but it only gives the version of Node, not the TypeScript compiler version.

UPDATE: After reaching out to LeetCode, they have updated their version page to include the TypeScript version as well.

typescript

Answer 1

Answer №1

If you're curious about the version of the compiler, you can inquire directly with it as it provides both version and versionMajorMinor based on your needs.

In a typical setting, this code snippet should suffice:

import { version } from 'typescript'
console.log(version)

However, leetcode operates in an unconventional manner. Their TypeScript setup lacks proper module configuration (despite being Node-based), resulting in a compile error. By introducing any, the following code snippet will display 4.0.2 on leetcode.

console.log((require as any)("typescript").version)

Even in the absence of direct information, we can make a well-educated guess. Compiling the below code successfully suggests the minimum required TypeScript version is 4.0.

type A = [1, 2]
type B = [...A]

Compiling this code also succeeds, although it shouldn't be allowed. This issue was addressed in TS 4.0.3, further narrowing down the possible versions.

type A = [1, name: 2]

We can determine if the TypeScript version is newer than 4.0.0 by examining another resolved issue. A compilation error containing [object Object] signals that the version is at least 4.0.1.

interface Foo {
    bar: Map<string, string>;
}
declare const foo: Foo;
const nom = foo.bar['nom'];

Interestingly, pinpointing the exact version between 4.0.1 and 4.0.2 seems challenging. The resolved issues for that specific version primarily focus on editor integration, which may not offer insights since leetcode doesn't utilize TypeScript's editor services.

Answer 2

If you're curious about the version of the compiler, you can inquire directly with it as it provides both version and versionMajorMinor based on your needs.

In a typical setting, this code snippet should suffice:

import { version } from 'typescript'
console.log(version)

However, leetcode operates in an unconventional manner. Their TypeScript setup lacks proper module configuration (despite being Node-based), resulting in a compile error. By introducing any, the following code snippet will display 4.0.2 on leetcode.

console.log((require as any)("typescript").version)

Even in the absence of direct information, we can make a well-educated guess. Compiling the below code successfully suggests the minimum required TypeScript version is 4.0.

type A = [1, 2]
type B = [...A]

Compiling this code also succeeds, although it shouldn't be allowed. This issue was addressed in TS 4.0.3, further narrowing down the possible versions.

type A = [1, name: 2]

We can determine if the TypeScript version is newer than 4.0.0 by examining another resolved issue. A compilation error containing [object Object] signals that the version is at least 4.0.1.

interface Foo {
    bar: Map<string, string>;
}
declare const foo: Foo;
const nom = foo.bar['nom'];

Interestingly, pinpointing the exact version between 4.0.1 and 4.0.2 seems challenging. The resolved issues for that specific version primarily focus on editor integration, which may not offer insights since leetcode doesn't utilize TypeScript's editor services.

Can the TypeScript version be extracted from a TS file in a remote environment?

Answer №1

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