// @ts-check

const fs = require("fs");

const path = require("path");

const header = fs

.readFileSync(path.resolve(__dirname, "Header.md"), "utf-8")

.split(/\n/)

.map((line) => ` * ${line}`)

.join("\n");

const files = Array.from(findFiles(path.resolve(__dirname, "..", "src")));

const sources = files

.filter((file) => !file.endsWith(".test.ts"))

.map(loadFile);

const tests = files.filter((file) => file.endsWith(".test.ts")).map(loadFile);

const outputs = [

`/**\n${header}\n */\n`,

...tests,

`

/**

* ========================================================================================

*

*

* END OF EXAMPLES, START OF IMPLEMENTATION

*

*

* ========================================================================================

*/

`

.split(/\n/)

.map((line) => line.trim())

.join("\n"),

...sources,

];

console.log(outputs.join("\n\n"));

/**

* @param {string} dir The path to search in.

*/

function* findFiles(dir) {

for (const name of fs.readdirSync(dir)) {

const filename = path.join(dir, name);

if (name.endsWith(".ts")) {

yield filename;

} else if (fs.statSync(filename).isDirectory()) {

yield* findFiles(filename);

}

}

}

/**

* @param {string} filename

*/

function loadFile(filename) {

const raw = fs.readFileSync(filename, "utf-8");

const content = raw

.replace(/export\s+type/g, "type")

.replace(/export\s+\*\s+from\s+"(.*)";?/g, "")

.replace(/import\s+\{([\s\S]*)\}\s+from\s+"(.*)";?/g, "")

.trim();

return content;

}