README.md

@@ -205,6 +205,14 @@ const results = replace.sync({
   processor: (input) => input.replace(/foo/g, 'bar'),
 });
 ```
+The custom processor will receive the path of the file being processed as a second parameter:
+
+```js
+const results = replace.sync({
+  files: 'path/to/files/*.html',
+  processor: (input, file) => input.replace(/foo/g, file),
+});
+```
 
 ### Array of custom processors
 

lib/helpers/run-processors.js

@@ -6,7 +6,7 @@ module.exports = function runProcessors(contents, processor, file) {
   const result = {file};
 
   const newContents = processors.reduce((contents, processor) => {
-    return processor(contents);
+    return processor(contents, file);
   }, contents);
 
   result.hasChanged = (newContents !== contents);

lib/process-file.spec.js

@@ -42,6 +42,13 @@ describe('Process a file', () => {
     return config;
   }
 
+  function appendFileProcessor(config) {
+    config.processor = (content, file) => {
+      return `${content}${file}`;
+    };
+    return config;
+  }
+
   /**
    * Async with promises
    */
@@ -754,6 +761,18 @@ describe('Process a file', () => {
       expect(results[2].hasChanged).to.equal(false);
     });
 
+    it('should pass filename to processor as second parameter', () => {
+      transform.sync(appendFileProcessor({
+        files: 'test*',
+      }));
+      const test1 = fs.readFileSync('test1', 'utf8');
+      const test2 = fs.readFileSync('test2', 'utf8');
+      const test3 = fs.readFileSync('test3', 'utf8');
+      expect(test1).to.equal(`${testData}test1`);
+      expect(test2).to.equal(`${testData}test2`);
+      expect(test3).to.equal('nopetest3');
+    });
+
     describe('fs', () => {
       it('reads and writes using a custom fs when provided', done => {
         const before = 'a';

package.json

@@ -1,6 +1,6 @@
 {
   "name": "replace-in-file",
-  "version": "7.1.0",
+  "version": "7.2.0",
   "description": "A simple utility to quickly replace text in one or more files.",
   "homepage": "https://github.com/adamreisnz/replace-in-file#readme",
   "author": {
@@ -38,13 +38,13 @@
     "yargs": "^17.7.2"
   },
   "devDependencies": {
-    "@babel/core": "^7.15.8",
-    "@babel/cli": "^7.15.7",
-    "@babel/preset-env": "^7.15.8",
-    "@babel/register": "^7.15.3",
+    "@babel/core": "^7.23.6",
+    "@babel/cli": "^7.23.4",
+    "@babel/preset-env": "^7.23.6",
+    "@babel/register": "^7.22.15",
     "babel-plugin-istanbul": "^6.1.1",
     "bluebird": "^3.7.2",
-    "chai": "^4.3.4",
+    "chai": "^4.3.10",
     "chai-as-promised": "^7.1.1",
     "dirty-chai": "^2.0.1",
     "mocha": "^10.2.0",

types/index.d.ts

@@ -1,7 +1,11 @@
 
 declare module 'replace-in-file' {
-  export function replaceInFile(config: ReplaceInFileConfig): Promise<ReplaceResult[]>;
-  export function replaceInFile(config: ReplaceInFileConfig, cb: (error: Error, results: ReplaceResult[]) => void): void;
+  export function replaceInFile(config: ReplaceInFileConfig & { from?: never, to?: never, processor: ReplaceInFileConfig["processor"] }): Promise<ReplaceResult[]>;
+  export function replaceInFile(config: ReplaceInFileConfig & { from?: never, to?: never, processor: ReplaceInFileConfig["processor"] }, cb: (error: Error, results: ReplaceResult[]) => void): void;
+
+  export function replaceInFile(config: ReplaceInFileConfig & { from: ReplaceInFileConfig["from"], to: ReplaceInFileConfig["to"], processor?: never }): Promise<ReplaceResult[]>;
+  export function replaceInFile(config: ReplaceInFileConfig & { from: ReplaceInFileConfig["from"], to: ReplaceInFileConfig["to"], processor?: never }, cb: (error: Error, results: ReplaceResult[]) => void): void;
+
   export default replaceInFile;
 
   export namespace replaceInFile {
@@ -20,14 +24,15 @@ declare module 'replace-in-file' {
   export interface ReplaceInFileConfig {
     files: string | string[];
     ignore?: string | string[];
-    from: From | Array<From>;
-    to: To | Array<To>;
+    from?: From | Array<From>;
+    to?: To | Array<To>;
     countMatches?: boolean;
-    allowEmptyPaths?: boolean,
-    disableGlobs?: boolean,
-    encoding?: string,
-    dry?:boolean
-    glob?:object
+    allowEmptyPaths?: boolean;
+    disableGlobs?: boolean;
+    encoding?: string;
+    dry?: boolean;
+    glob?: object;
+    processor?: ProcessorCallback | Array<ProcessorCallback>;
   }
 
   export interface ReplaceResult {
@@ -40,3 +45,4 @@ declare module 'replace-in-file' {
 
 type FromCallback = (file: string) => string | RegExp | (RegExp | string)[];
 type ToCallback = (match: string, file: string) => string | string[];
+type ProcessorCallback = (input: string, file: string) => string;