feat(extensions): implement import path replacement for consistent file extensions

Author: stephenjason89

src/rules/extensions.js

@@ -183,6 +183,13 @@ module.exports = {
  }
  }
 
+ function replaceImportPath(source, importPath) {
+ return source.replace(
+ /^(['"])(.+)\1$/,
+ (_, quote) => `${quote}${importPath}${quote}`,
+ )
+ }
+
  function checkFileExtension(source, node) {
  // bail if the declaration doesn't have a source, e.g. "export { foo };", or if it's only partially typed like in an editor
  if (!source || !source.value) { return; }
@@ -227,6 +234,19 @@ module.exports = {
  const extensionRequired = isUseOfExtensionRequired(extension, !overrideAction && isPackage);
  const extensionForbidden = isUseOfExtensionForbidden(extension);
  if (extensionRequired && !extensionForbidden) {
+ const fixedImportPath = stringifyPath({
+ pathname: `${
+ /([\\/]|[\\/]?\.?\.)$/.test(importPath)
+ ? `${
+ importPath.endsWith('/')
+ ? importPath.slice(0, -1)
+ : importPath
+ }/index.${extension}`
+ : `${importPath}.${extension}`
+ }`,
+ query,
+ hash,
+ })
  context.report({
  node: source,
  message:
@@ -235,7 +255,7 @@ module.exports = {
  fix(fixer) {
  return fixer.replaceText(
  source,
- JSON.stringify(`${importPathWithQueryString}.${extension}`),
+ replaceImportPath(source.raw, fixedImportPath),
  );
  },
  } : {},