Use custom implementation of canonicalize for wasi

[thecrypticace]

Fixes #18418

Pulled some old code that oxc-resolver used. They did switch to fs::read_link at some point though. Perhaps we should do the same here?

• Needs tests
• Investigate read_link

[thecrypticace]

Notes for me:

Requires a linux container to test:

container run -it -v $(pwd)/temp:/temp --entrypoint /bin/bash node

Test file:

// Local compiled versions
let native = require("./native/package/tailwindcss-oxide.linux-arm64-gnu.node");
let wasi = require("./wasi/package/tailwindcss-oxide.wasi.cjs");

// Installed versions
// let native = require("@tailwindcss/oxide");
// let wasi = require("@tailwindcss/oxide-wasm32-wasi");

let fs = require("node:fs");

fs.mkdirSync("node_modules/example", { recursive: true });
fs.writeFileSync("node_modules/example/test.mjs", "bg-red-500");

let sources = [{ base: process.cwd(), pattern: "node_modules/example/test.mjs", negated: false }];

let expected = {
  native: ["bg-red-500"],
  wasi: ["bg-red-500"],
};

let actual = {
  native: new native.Scanner({ sources }).scan(),
  wasi: new wasi.Scanner({ sources }).scan(),
};

console.log({ expected, actual });