import * as path from 'path';

/**

* Transforms a stack string with format 1. into format 2. using

* package.json information of that package.

*

* Formats:

* 1. CWD/node_modules/<module1>/../node_modules/<module2>

* 2. <module1>@<module1-version>/<module2>@<module2-version>

*/

export function npmize(stack: string): string {

const cwd = process.cwd();

const moduleRE = /([^() ]*?)node_modules(.)[^/\\]+[/\\]/g;

let base: string | undefined;

return stack

.replace(moduleRE, ($0, $1: string, $2: string) => {

if ($1) {

const rel = path.relative(cwd, $1);

base = $0;

// Dynamic path: must use require(); import is static, import() is async

const pack = require(path.join(base, 'package.json')) as {

name: string;

version: string;

};

return rel + pack.name + '@' + pack.version + $2;

}

base += $0;

// Dynamic path: must use require(); import is static, import() is async

const pack = require(path.join(base!, 'package.json')) as {

name: string;

version: string;

};

return pack.name + '@' + pack.version + $2;

})

.replace(cwd, '.');

}

export function formatStack(stack: string): string {

return (

npmize(stack) +

'\n--\n' +

'cwd ' +

process.cwd() +

'\n' +

'node-' +

process.version +

' ' +

new Date().toISOString()

);

}