Cordova Hooks represent special scripts which could be added by application and plugin developers or even by your own build system to customize cordova commands.

Cordova hooks allow you to perform special activities around cordova commands. For example, you may have a custom tool that checks for code formatting in your javascript file. And, you would like to run this tool before every build. In such a case, you could use a 'before_build' hook and instruct the cordova run time to run the custom tool to be invoked before every build.

Hooks might be related to your application activities such as before_build, after_build, etc. Or, they might be related to the plugins of your application. For example, hooks such as before_plugin_add, after_plugin_add, etc applies to plugin related activities. These hooks can be associated with all plugins within your application or be specific to only one plugin.

Cordova supports the following hook types:

Hook Type Associated Cordova Commands Description
before_platform_add cordova platform add To be executed before and after adding a platform.
before_platform_rm cordova platform rm To be executed before and after removing a platform.
before_platform_ls cordova platform ls To be executed before and after listing the installed and available platforms.
before_prepare cordova prepare
cordova platform add
cordova build
cordova run
To be executed before and after preparing your application.
before_compile cordova compile
cordova build
To be executed before and after compiling your application.
before_deploy cordova emulate
cordova run
To be executed before deploying your application.
before_build cordova build To be executed before and after building your application.
before_emulate cordova emulate To be executed before and after emulating your application.
before_run cordova run To be executed before and after running your application.
before_serve cordova serve To be executed before and after serving your application.
before_clean cordova clean To be executed before and after cleaning your application.
before_plugin_add cordova plugin add To be executed before and after adding a plugin.
before_plugin_rm cordova plugin rm To be executed before and after removing a plugin.
before_plugin_ls cordova plugin ls To be executed before and after listing the plugins in your application.
before_plugin_install cordova plugin add To be executed before and after installing a plugin (to the platforms). Plugin hooks in plugin.xml are executed for a plugin being installed only
before_plugin_uninstall cordova plugin rm To be executed before uninstalling a plugin (from the platforms).Plugin hooks in plugin.xml are executed for a plugin being installed only

Ways to define hooks


Hooks could be defined in project's config.xml using <hook> elements, for example:

<hook type="before_build" src="scripts/appBeforeBuild.bat" />
<hook type="before_build" src="scripts/appBeforeBuild.js" />
<hook type="before_plugin_install" src="scripts/appBeforePluginInstall.js" />

<platform name="android">
    <hook type="before_build" src="scripts/android/appAndroidBeforeBuild.bat" />
    <hook type="before_build" src="scripts/android/appAndroidBeforeBuild.js" />
    <hook type="before_plugin_install" src="scripts/android/appAndroidBeforePluginInstall.js" />

<platform name="windows">
    <hook type="before_build" src="scripts/windows/appWinBeforeBuild.bat" />
    <hook type="before_build" src="scripts/windows/appWinBeforeBuild.js" />
    <hook type="before_plugin_install" src="scripts/windows/appWinBeforePluginInstall.js" />

Plugin hooks (plugin.xml)

As a plugin developer you can define hook scripts using <hook> elements in a plugin.xml like that:

<hook type="before_plugin_install" src="scripts/beforeInstall.js" />
<hook type="after_build" src="scripts/afterBuild.js" />

<platform name="android">
    <hook type="before_plugin_install" src="scripts/androidBeforeInstall.js" />
    <hook type="before_build" src="scripts/androidBeforeBuild.js" />

before_plugin_install, after_plugin_install, before_plugin_uninstall plugin hooks will be fired exclusively for the plugin being installed/uninstalled.

Order of Hooks execution

Based on Hooks Definition

Hook scripts for one given hook run serially in the order of appearance in their file with application hooks from config.xml running before plugin hooks from plugins/.../plugin.xml.

Based on the Internal order of execution

The internal order of execution of hooks is fixed.

Example 1 (cordova platform add)

If there are hooks associated with before_platform_add, after_platform_add, before_prepare, after_prepare, before_plugin_install and after_plugin_install (and assuming you have one plugin installed on your project), adding a new platform will execute the hooks in the following order:

Example 2 (cordova build)

If there are hooks associated with before_prepare, after_prepare, before_compile, after_compile, before_build and after_build - running a build command will execute the hooks in the following order:


Script Interface


If you are writing hooks using Node.js you should use the following module definition:

module.exports = function(context) {

Here is an example that showcases the contents of the context object:

  // The type of hook being run
  hook: 'before_plugin_install',

  // Absolute path to the hook script that is currently executing
  scriptLocation: '/foo/scripts/appBeforePluginInstall.js',

  // The CLI command that lead to this hook being executed
  cmdLine: 'cordova plugin add plugin-withhooks',

  // The options associated with the current operation.
  // WARNING: The contents of this object vary among the different
  // operations and are currently not documented anywhere.
  opts: {
    projectRoot: '/foo',

    cordova: {
      platforms: ['android'],
      plugins: ['plugin-withhooks'],
      version: '0.21.7-dev'

    // Information about the plugin currently operated on.
    // This object will only be passed to plugin hooks scripts.
    plugin: {
      id: 'plugin-withhooks',
      pluginInfo: { /* ... */ },
      platform: 'android',
      dir: '/foo/plugins/plugin-withhooks'

  // A reference to Cordova's API
  cordova: { /* ... */ }

You can also require additional Cordova modules in your script using context.requireCordovaModule in the following way:

const cordovaCommon = context.requireCordovaModule('cordova-common');

You can make your scripts asynchronous using Promises. Here is an example that just waits for a second and then prints the amount of milliseconds spent waiting:

module.exports = context => {
    return new Promise(resolve => {
        const start = Date.now();
        setTimeout(() => resolve(Date.now() - start), 1000);
    }).then(msWaited => {
        console.log(`${context.scriptLocation} waited ${msWaited} ms`);


Non-javascript scripts are run via Node child_process spawn from the project's root directory and have the root directory passed as the first argument. All other options are passed to the script using environment variables:

Environment Variable Name Description
CORDOVA_VERSION The version of the Cordova-CLI.
CORDOVA_PLATFORMS Comma separated list of platforms that the command applies to (e.g: android, ios).
CORDOVA_PLUGINS Comma separated list of plugin IDs that the command applies to (e.g: cordova-plugin-file-transfer, cordova-plugin-file).
CORDOVA_HOOK Path to the hook that is being executed.
CORDOVA_CMDLINE The exact command-line arguments passed to cordova (e.g: cordova run ios --emulate).

If a script returns a non-zero exit code, then the parent cordova command will be aborted.

Note: we highly recommend writing your hooks using Node.js so that they are cross-platform, see Javascript section above.

Windows Quirks

If you are working on Windows, and your hook scripts aren't *.bat files, Cordova CLI will expect a shebang line as the first line of the script. This way it knows the interpreter it needs to use to launch the script. A shebang line for a Python script could look like this:

#!/usr/bin/env python

Sample Usage

This sample demonstrates Cordova hooks usage to trace to the console output the size of generated .apk file for Android platform.

Create blank Cordova app and add the following definition to config.xml to tell Cordova to run afterBuild.js script after each platform build.

<hook type="after_build" src="scripts/afterBuild.js" />

Create scripts/afterBuild.js file and add the following implementation. We use async version of fs.stat method to demonstrate how async functions can be used in hooks.

const fs = require('fs');
const util = require('util');
const stat = util.promisify(fs.stat);

module.exports = function(ctx) {
    // Make sure android platform is part of build
    if (!ctx.opts.platforms.includes('android')) return;

    const platformRoot = path.join(ctx.opts.projectRoot, 'platforms/android');
    const apkFileLocation = path.join(platformRoot, 'build/outputs/apk/android-debug.apk');

    return stat(apkFileLocation).then(stats => {
      console.log(`Size of ${apkFileLocation} is ${stats.size} bytes`);

Parameter ctx in example above is passed by Cordova and represents execution context such as script full path, target platform, command-line arguments, etc and also exposes additional helper functionality. See Script Interface section above for more details.

You can now add android platform and execute build.

cordova platform add android
cordova build
Size of path\to\app\platforms\android\build\outputs\apk\android-debug.apk is 1821193 bytes

More good usage examples could be found in Three Hooks Your Cordova Phone Gap Project needs