"'const' declarations can only be declared inside a block" should be issued more aggressively

[RyanCavanaugh]

🔎 Search Terms

const let block keyword if

🕗 Version & Regression Information

• This is the behavior in every version I tried

⏯ Playground Link

https://www.typescriptlang.org/play/#code/GYVwdgxgLglg9mABMAFASkQbwFCMTYRFARkQD5EAGNXPRCBAZykQFNEBeRAZgG5a8DMIzgAbVgDpRcAOYpWafngC+2VUA

💻 Code

This code issues a somewhat perplexing error

function f() {
  if (1 > 0)
    const e = 3;
    console.log(e);
  }
}

While there's also an error on the final }, this can easily be off-screen, so it appears like TS has totally gone off the rails. We should issue the correct "const' declarations can only be declared inside a block" error more-unconditionally so that it's apparent that there's a syntax error earlier in the program (the missing { after the if)

🙁 Actual behavior

The error doesn't appear until all the other syntactic problems have been removed

🙂 Expected behavior

It should always appear

Additional information about the issue

No response

[Peter-sunmoon-a11y]

function f() {
    if (1 > 0) { // 👀 “{”
        const e = 3;
        console.log(e);
    }
}

Your if code is missing a "{" @RyanCavanaugh

[MartinJohns]

Your if code is missing a "{"

This is intentional. Please read the issue.

[RyanCavanaugh]

Your if code is missing a "{"

Yes, this is mentioned in the issue:

so that it's apparent that there's a syntax error earlier in the program (the missing { after the if)