import fs from "fs";

import fsPromises from "fs/promises";

import {

glob,

} from "glob";

async function checkErrorBaselines() {

const data = await fsPromises.readFile("src/compiler/diagnosticMessages.json", "utf-8");

const messages = JSON.parse(data);

const keys = Object.keys(messages);

console.log("Loaded " + keys.length + " errors");

for (const k of keys) {

messages[k].seen = false;

}

const errRegex = /\(\d+,\d+\): error TS([^:]+):/g;

const baseDir = "tests/baselines/reference/";

const files = (await fsPromises.readdir(baseDir)).filter(f => f.endsWith(".errors.txt"));

for (const f of files) {

const baseline = fs.readFileSync(baseDir + f, "utf-8");

let g;

while (g = errRegex.exec(baseline)) {

const errCode = +g[1];

const msg = keys.filter(k => messages[k].code === errCode)[0];

messages[msg].seen = true;

}

}

console.log("== List of errors not present in baselines ==");

let count = 0;

for (const k of keys) {

if (messages[k].seen !== true) {

console.log(k);

count++;

}

}

console.log(count + " of " + keys.length + " errors are not in baselines");

}

async function checkSourceFiles() {

const data = await fsPromises.readFile("src/compiler/diagnosticInformationMap.generated.ts", "utf-8");

const errorRegexp = /\s(\w+): \{ code/g;

const errorNames = [];

let errMatch;

while (errMatch = errorRegexp.exec(data)) {

errorNames.push(errMatch[1]);

}

let allSrc = "";

const files = await glob("./src/**/*.ts");

console.log("Reading " + files.length + " source files");

for (const file of files) {

if (file.indexOf("diagnosticInformationMap.generated.ts") > 0) {

continue;

}

const src = fs.readFileSync(file, "utf-8");

allSrc = allSrc + src;

}

console.log("Consumed " + allSrc.length + " characters of source");

let count = 0;

console.log("== List of errors not used in source ==");

for (const errName of errorNames) {

if (!allSrc.includes(errName)) {

console.log(errName);

count++;

}

}

console.log(count + " of " + errorNames.length + " errors are not used in source");

}

async function main() {

await checkErrorBaselines();

await checkSourceFiles();

}

main();