move ignoreAll into its own file

lib/get-files.mjs

@@ -0,0 +1,23 @@
+import walkSync from "walk-sync";
+
+export default function getFiles(cwd) {
+  let ignoreFile;
+
+  try {
+    ignoreFile = readFileSync(join(cwd, '.gitignore'), 'utf8')
+      .split('\n')
+      .filter((line) => line.length)
+      .filter((line) => !line.startsWith('#'))
+      // walkSync can't handle these
+      .filter((line) => !line.startsWith('!'))
+      .map((line) => line.replace(/^\//, ''))
+      .map((line) => line.replace(/\/$/, '/*'));
+  } catch (e) {
+    // noop
+  }
+
+  return walkSync(cwd, {
+    globs: ['**/*.hbs'],
+    ignore: ignoreFile || ['**/node_modules/*'],
+  });
+}

lib/ignore-error.mjs

@@ -0,0 +1,33 @@
+import { writeFileSync } from 'fs';
+
+export default function ignoreError(errorInput, file, filePath) {
+  let errors = errorInput.results ?? errorInput;
+
+  const ruleIds = errors
+    .filter(error => error.severity === 2)
+    .map(error => error.rule);
+
+  let uniqueIds = [...new Set(ruleIds)];
+
+  if (!uniqueIds.length) {
+    // no errors to ignore
+    return;
+  }
+
+  const firstLine = file.split('\n')[0];
+
+  if (firstLine.includes('template-lint-disable')) {
+    const matched = firstLine.match(/template-lint-disable(.*)(--)?\}\}/);
+    const existing = matched[1].split(' ')
+      .map(item => item.trim())
+      .filter(item => item.length);
+
+    uniqueIds = [...new Set([...ruleIds, ...existing])];
+    uniqueIds.sort((a, b) => a.localeCompare(b));
+
+    writeFileSync(filePath, file.replace(/^.*\n/, `{{! template-lint-disable ${uniqueIds.join(' ')} }}\n`));
+  } else {
+    uniqueIds.sort((a, b) => a.localeCompare(b));
+    writeFileSync(filePath, `{{! template-lint-disable ${uniqueIds.join(' ')} }}\n${file}`);
+  }
+}

lib/ignore.mjs

@@ -0,0 +1,44 @@
+import { createRequire } from 'module';
+import { readFileSync } from "fs";
+import { join } from "path";
+
+import getFiles from "./get-files.mjs";
+import ignoreError from './ignore-error.mjs';
+
+const require = createRequire(import.meta.url);
+
+// only passing the cwd in for testing purposes
+export default async function ignoreAll(cwd = process.cwd()) {
+  const files = getFiles(cwd);
+
+  let TemplateLinter;
+
+  try {
+    TemplateLinter = await import(require.resolve('ember-template-lint', { paths: [cwd]}));
+  } catch (err) {
+    console.error({err});
+  }
+
+  const linter = new TemplateLinter.default();
+
+  for (const fileName of files) {
+    const template = readFileSync(join(cwd, fileName), {
+      encoding: 'utf8',
+    });
+
+    let results = linter.verify({
+      source: template,
+      filePath: fileName,
+      // workaround for /~https://github.com/ember-template-lint/ember-template-lint/issues/2128
+      moduleId: fileName.replace(/\.[^/\\.]+$/, '')
+    });
+
+
+    // support ember-template-lint 2.x and 3.x
+    if (results.then) {
+      results = await results;
+    }
+
+    ignoreError(results, template, join(cwd, fileName));
+  }
+}

main.mjs

@@ -1,100 +1,8 @@
 import { readFileSync, writeFileSync } from 'fs';
-import importCwd from 'import-cwd';
-import walkSync from 'walk-sync';
 import { join } from 'path';
+import getFiles from './lib/get-files.mjs';
 
-import { createRequire } from 'module';
-const require = createRequire(import.meta.url);
-
-function getFiles(cwd) {
-  let ignoreFile;
-
-  try {
-    ignoreFile = readFileSync(join(cwd, '.gitignore'), 'utf8')
-      .split('\n')
-      .filter((line) => line.length)
-      .filter((line) => !line.startsWith('#'))
-      // walkSync can't handle these
-      .filter((line) => !line.startsWith('!'))
-      .map((line) => line.replace(/^\//, ''))
-      .map((line) => line.replace(/\/$/, '/*'));
-  } catch (e) {
-    // noop
-  }
-
-  return walkSync(cwd, {
-    globs: ['**/*.hbs'],
-    ignore: ignoreFile || ['**/node_modules/*'],
-  });
-}
-
-function ignoreError(errorInput, file, filePath) {
-  let errors = errorInput.results ?? errorInput;
-
-  const ruleIds = errors
-    .filter(error => error.severity === 2)
-    .map(error => error.rule);
-
-  let uniqueIds = [...new Set(ruleIds)];
-
-  if (!uniqueIds.length) {
-    // no errors to ignore
-    return;
-  }
-
-  const firstLine = file.split('\n')[0];
-
-  if (firstLine.includes('template-lint-disable')) {
-    const matched = firstLine.match(/template-lint-disable(.*)(--)?\}\}/);
-    const existing = matched[1].split(' ')
-      .map(item => item.trim())
-      .filter(item => item.length);
-
-    uniqueIds = [...new Set([...ruleIds, ...existing])];
-    uniqueIds.sort((a, b) => a.localeCompare(b));
-
-    writeFileSync(filePath, file.replace(/^.*\n/, `{{! template-lint-disable ${uniqueIds.join(' ')} }}\n`));
-  } else {
-    uniqueIds.sort((a, b) => a.localeCompare(b));
-    writeFileSync(filePath, `{{! template-lint-disable ${uniqueIds.join(' ')} }}\n${file}`);
-  }
-}
-
-// only passing the cwd in for testing purposes
-export async function ignoreAll(cwd = process.cwd()) {
-  const files = getFiles(cwd);
-
-  let TemplateLinter;
-
-  try {
-    TemplateLinter = await import(require.resolve('ember-template-lint', { paths: [cwd]}));
-  } catch (err) {
-    console.error({err});
-  }
-
-  const linter = new TemplateLinter.default();
-
-  for (const fileName of files) {
-    const template = readFileSync(join(cwd, fileName), {
-      encoding: 'utf8',
-    });
-
-    let results = linter.verify({
-      source: template,
-      filePath: fileName,
-      // workaround for /~https://github.com/ember-template-lint/ember-template-lint/issues/2128
-      moduleId: fileName.replace(/\.[^/\\.]+$/, '')
-    });
-
-
-    // support ember-template-lint 2.x and 3.x
-    if (results.then) {
-      results = await results;
-    }
-
-    ignoreError(results, template, join(cwd, fileName));
-  }
-}
+export { default as ignoreAll } from './lib/ignore.mjs';
 
 export function list(directory) {
   // this is only used for internal testing, lint-to-the-future never passes a