chore: add support for gitignores

Author: pnodet

Diff for: bun.lockb

@@ -1,6 +1,6 @@
 {
   "name": "@nivalis/linter",
-  "version": "0.0.7",
+  "version": "0.0.8",
   "module": "src/index.ts",
   "type": "module",
   "publishConfig": {
@@ -60,6 +60,7 @@
     "@biomejs/js-api": "^0.6.2",
     "eslint": "^9.11.0",
     "fast-glob": "^3.3.2",
+    "ignore": "^6.0.2",
     "yargs": "^17.7.2"
   }
 }

Diff for: package.json

@@ -268,13 +268,18 @@ export const lintWithBiome = async (
     performance.mark("biome-start");
   }
 
-  const stream = getFilesToLint(patterns);
+  const {stream, filter} = getFilesToLint(patterns);
 
   const biomeResults: ESLint.LintResult[] = [];
 
   for await (const file of stream) {
-    console.log(file);
-    const result = await biomeLintFile(biome, config, file as string, fix, unsafe);
+    const filePath = file as string;
+
+    if (!filter(path.relative(process.cwd(), filePath))) {
+      continue;
+    }
+
+    const result = await biomeLintFile(biome, config, filePath, fix, unsafe);
     biomeResults.push(result);
   }
 

Diff for: src/biome.ts

@@ -1,8 +1,25 @@
 import path from "node:path";
+import ignore from 'ignore'
 import fs from "node:fs";
 import fg from "fast-glob";
 
 export const getFilesToLint =  (patterns: string[]) => {
+
+  const gitignore = path.join(process.cwd(), ".gitignore");
+  const ignorePatterns: string[] = [".git"];
+
+  if (fs.existsSync(gitignore)) {
+    const gitignoreContent = fs.readFileSync(gitignore, "utf8");
+    const lines = gitignoreContent
+    .split("\n")
+    .map((line) => line.trim())
+    .filter((line) => line && !line.startsWith("#") && !line.startsWith("!"));
+
+    ignorePatterns.push(...lines);
+  }
+
+  const ig = ignore().add(ignorePatterns);
+
   const globPatterns = patterns.flatMap((pattern) => {
     if (!fs.existsSync(pattern)) {
       return pattern;
@@ -21,7 +38,9 @@ export const getFilesToLint =  (patterns: string[]) => {
     return [];
   });
 
-  return fg.stream(globPatterns, { dot: true, absolute: true, ignore:
-     ["node_modules/**", "**/node_modules/**"]
-   });
+  return {stream: fg.stream(globPatterns, { dot: false, absolute: true, ignore:
+     ignorePatterns
+   }),
+   filter: ig.createFilter()
+  };
 };