generateImages() function does not return a Promise

[jetxr]

Describe the bug
generateImages() function is async and type hints that it will return a Promise but does not return a Promise.

pwa-asset-generator/src/main.ts

Lines 119 to 124 in aadbb9b

	return {
	savedImages,
	htmlMeta,
	manifestJsonContent,
	};
	}

Expected behavior
generateImages() should return a Promise that gets resolved with the value of type Result.

Why

• While using await generateImages in a CD environment, I cannot do process.exit() as shown in the examples.
• Current implementation causes the following example to just wait without exiting gracefully

import {generateImages} from "pwa-asset-generator";

await generateImages('input.svg', './output', {
    type: 'png',
});

await generateImages('input.svg', './output', {
    type: 'jpg',
});

System (please complete the following information):

• OS: macOS Ventura
• node version: 18.4
• npm version: 9.3.1
• cli version: 6.2.1

Additional context
Thankully Github Actions terminated the script after 6 hours :)

[atjn]

I am not able to reproduce this. The provided file runs fine and awaits each function call, then exits the process.

With that said, the output code uses an old promise shim to return the promise, and it is possible that this is incompatible with whatever setup you have. We can leave this open until a new version is released that uses native promises.