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README.md

1038 - A 'declare' modifier cannot be used in an already ambient context.

🔍 Regex Patterns

regexFind: /\s+declare\s+/
regexReplace:

💡 Suggestion

Remove declare modifier from ambient context. The declare keyword is redundant inside already ambient contexts like declare module or declare namespace.

📝 Examples

Example 1: Declare const in ambient module

declare module "my-module" {
-  declare const value = 42
+  const value: number
}

Explanation: Remove declare modifier and add type annotation instead of initializer

Example 2: Declare interface in ambient namespace

declare namespace MyNamespace {
-  declare interface Config {
+  interface Config {
     name: string
   }
}

Explanation: Remove declare modifier from interface in ambient namespace

🖼️ Visual Output

Command

npx tsc ./docs/1038/index.ts --noEmit --pretty

Result

docs/1038/index.ts:2:3 - error TS1038: A 'declare' modifier cannot be used in an already ambient context.

2   declare const value = 42
  ~~~~~~~

OR (without --pretty flag):

docs/1038/index.ts(2,3): error TS1038: A 'declare' modifier cannot be used in an already ambient context.