Leverage glob patterns within TypeScript declaration files

Utilizing the file-loader webpack plugin allows for the conversion of media imports into their URLs. For example, in import src from './image.png', the variable src is treated as a string.

To inform TypeScript about this behavior, one can create a declaration file with lines like:

declare module '*.png' { export default ''; }
declare module '*.jpg' { export default ''; }
declare module '*.jpeg' { export default ''; }
declare module '*.svg' { export default ''; }
declare module '*.gif' { export default ''; }
declare module '*.avif' { export default ''; }

However, this approach may seem verbose. Attempting to condense it using wildcards doesn't achieve the desired result:

declare module '*.{png,jpe?g,svg,gif,avif}' { export default ''; }

Is there a way to configure TypeScript through a parameter in the tsconfig.json file or a CLI option to properly handle glob patterns in declaration files?

Answer №1

As per the discussion on microsoft/TypeScript#38638, TypeScript does not currently have support for globs in declaration files.

Suggesting to enhance declare module wildcards to allow matching parts of a path similar to a glob pattern

Status: under review

[...]

Here's an example of what I wish could be possible:

declare module '@my/**/icons/**/*.svg' { }
declare module '@my/**/images/**/*.svg' { }

Hats off to @Aleksey L. for guiding me towards this topic through the comments.

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