signal-desktop/ts/util/isPathInside.ts

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// This is inspired by the `is-path-inside` module on npm.
import * as path from 'path';
export function isPathInside(childPath: string, parentPath: string): boolean {
const childPathResolved = path.resolve(childPath);
let parentPathResolved = path.resolve(parentPath);
if (!parentPathResolved.endsWith(path.sep)) {
parentPathResolved += path.sep;
}
return (
childPathResolved !== parentPathResolved &&
childPathResolved.startsWith(parentPathResolved)
);
}