Constants (Vaadin Platform (vaadin-platform-javadoc) 14.2.0 API)

java.lang.Object
- com.vaadin.flow.server.Constants

All Implemented Interfaces:

Serializable
```
public final class Constants
extends Object
implements Serializable
```
Constants used by the server side framework.
Not available on the client side, for that use ApplicationConstants.

Since:

1.0

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`COMPATIBILITY_RESOURCES_FRONTEND_DEFAULT` Location for the frontend resources in jar files for compatibility mode (also obsolete but supported for NPM mode).
`static String`	`COMPILED_WEB_COMPONENTS_PATH` Configuration name for the parameter that sets the compiled web components path.
`static String`	`DEFAULT_EXTERNAL_STATS_URL` Default location to look for the external stats.json.
`static String`	`DISABLE_AUTOMATIC_SERVLET_REGISTRATION` Configuration name for the parameter that determines if Flow should automatically register servlets needed for the application to work.
`static String`	`DISABLE_WEBJARS` Configuration name for the parameter that determines if Flow should use webJars or not.
`static String`	`EXTERNAL_STATS_FILE` Property boolean for marking stats.json to be fetched from external location.
`static String`	`EXTERNAL_STATS_FILE_TOKEN`
`static String`	`EXTERNAL_STATS_URL` Property String for external stats.json location url.
`static String`	`EXTERNAL_STATS_URL_TOKEN`
`static String`	`FRONTEND_TOKEN`
`static String`	`FRONTEND_URL_DEV_DEFAULT` Default frontend URL prefix for development.
`static String`	`FRONTEND_URL_ES5` Configuration name for the frontend URL prefix for ES5.
`static String`	`FRONTEND_URL_ES5_DEFAULT_VALUE` Default frontend URL prefix for ES.
`static String`	`FRONTEND_URL_ES6` Configuration name for the frontend URL prefix for ES6.
`static String`	`FRONTEND_URL_ES6_DEFAULT_VALUE` Default frontend URL prefix for ES6.
`static String`	`GENERATED_TOKEN`
`static String`	`I18N_PROVIDER` I18N provider property.
`static String`	`LOAD_ES5_ADAPTERS` Configuration name for loading the ES5 adapters.
`static String`	`LOCAL_FRONTEND_RESOURCES_PATH` Default path for local frontend resources packaged for jar add-ons.
`static String`	`META_INF` The path used in the vaadin servlet for handling static resources.
`static String`	`NPM_TOKEN`
`static String`	`PACKAGE_JSON` Name of the `npm` main file.
`static String`	`POLYFILLS_DEFAULT_VALUE`
`static String`	`REQUIRE_HOME_NODE_EXECUTABLE` Configuration parameter name for requiring node executable installed in home directory.
`static String`	`REQUIRED_ATMOSPHERE_RUNTIME_VERSION`
`static String`	`RESOURCES_FRONTEND_DEFAULT` Location for the frontend resources in jar files.
`static String`	`SERVLET_PARAMETER_BOWER_MODE` Deprecated. the parameter is renamed to `SERVLET_PARAMETER_COMPATIBILITY_MODE`
`static String`	`SERVLET_PARAMETER_BROTLI` Configuration name for the parameter that determines whether Brotli compression should be used for static resources in cases when a precompressed file is available.
`static String`	`SERVLET_PARAMETER_CLOSE_IDLE_SESSIONS`
`static String`	`SERVLET_PARAMETER_COMPATIBILITY_MODE` enable it if your project is a Polymer 2.0 one, should be removed in V15
`static String`	`SERVLET_PARAMETER_DEVMODE_OPTIMIZE_BUNDLE` Boolean parameter for enabling/disabling bytecode scanning in dev mode.
`static String`	`SERVLET_PARAMETER_DEVMODE_TRANSPILE` Boolean parameter for enabling/disabling transpilation for IE11 with the BabelMultiTargetPlugin in dev mode.
`static boolean`	`SERVLET_PARAMETER_DEVMODE_TRANSPILE_DEFAULT` Default value of `SERVLET_PARAMETER_DEVMODE_TRANSPILE`.
`static String`	`SERVLET_PARAMETER_DEVMODE_WEBPACK_ERROR_PATTERN` Configuration name for the pattern used to inspect the webpack output to detecting when compilation failed.
`static String`	`SERVLET_PARAMETER_DEVMODE_WEBPACK_OPTIONS` Configuration name for adding extra options to the webpack-dev-server.
`static String`	`SERVLET_PARAMETER_DEVMODE_WEBPACK_SUCCESS_PATTERN` Configuration name for the pattern used to inspect the webpack output to assure it is up and running.
`static String`	`SERVLET_PARAMETER_DEVMODE_WEBPACK_TIMEOUT` Configuration name for the time waiting for webpack output success or error pattern defined in `SERVLET_PARAMETER_DEVMODE_WEBPACK_SUCCESS_PATTERN` and `SERVLET_PARAMETER_DEVMODE_WEBPACK_ERROR_PATTERN` parameters.
`static String`	`SERVLET_PARAMETER_DISABLE_XSRF_PROTECTION`
`static String`	`SERVLET_PARAMETER_ENABLE_DEV_SERVER`
`static String`	`SERVLET_PARAMETER_ENABLE_PNPM` Configuration parameter name for enabling pnpm.
`static String`	`SERVLET_PARAMETER_HEARTBEAT_INTERVAL`
`static String`	`SERVLET_PARAMETER_JSBUNDLE`
`static String`	`SERVLET_PARAMETER_MAX_MESSAGE_SUSPEND_TIMEOUT`
`static String`	`SERVLET_PARAMETER_POLYFILLS`
`static String`	`SERVLET_PARAMETER_PRODUCTION_MODE`
`static String`	`SERVLET_PARAMETER_PUSH_MODE`
`static String`	`SERVLET_PARAMETER_PUSH_SUSPEND_TIMEOUT_LONGPOLLING`
`static String`	`SERVLET_PARAMETER_PUSH_URL`
`static String`	`SERVLET_PARAMETER_REQUEST_TIMING`
`static String`	`SERVLET_PARAMETER_REUSE_DEV_SERVER`
`static String`	`SERVLET_PARAMETER_SEND_URLS_AS_PARAMETERS`
`static String`	`SERVLET_PARAMETER_STATISTICS_JSON` Configuration name for the WebPack profile statistics json file to use to determine template contents.
`static String`	`SERVLET_PARAMETER_SYNC_ID_CHECK`
`static String`	`SERVLET_PARAMETER_WEB_COMPONENT_DISCONNECT`
`static int`	`SHOULD_WORK_NODE_MAJOR_VERSION` Deprecated. this is an internal constant, don't use it
`static int`	`SHOULD_WORK_NODE_MINOR_VERSION` Deprecated. this is an internal constant, don't use it
`static int`	`SHOULD_WORK_NPM_MAJOR_VERSION` Deprecated. this is an internal constant, don't use it
`static int`	`SHOULD_WORK_NPM_MINOR_VERSION` Deprecated. this is an internal constant, don't use it
`static String`	`STATISTICS_JSON_DEFAULT` Default path for the WebPack profile statistics json file.
`static int`	`SUPPORTED_NODE_MAJOR_VERSION` Deprecated. this is an internal constant, don't use it
`static int`	`SUPPORTED_NODE_MINOR_VERSION` Deprecated. this is an internal constant, don't use it
`static int`	`SUPPORTED_NPM_MAJOR_VERSION` Deprecated. this is an internal constant, don't use it
`static int`	`SUPPORTED_NPM_MINOR_VERSION` Deprecated. this is an internal constant, don't use it
`static int`	`SUPPORTED_PNPM_MAJOR_VERSION` Deprecated. this is an internal constant, don't use it
`static int`	`SUPPORTED_PNPM_MINOR_VERSION` Deprecated. this is an internal constant, don't use it
`static String`	`USE_ORIGINAL_FRONTEND_RESOURCES` Configuration name for the parameter that determines if Flow should use bundled fragments or not.
`static String`	`VAADIN_BUILD` The static build resources folder.
`static String`	`VAADIN_BUILD_FILES_PATH` The prefix used for all internal static files, relative to context root.
`static String`	`VAADIN_CONFIGURATION` The static configuration resources folder.
`static String`	`VAADIN_MAPPING` The path used in the vaadin servlet for handling static resources.
`static String`	`VAADIN_PREFIX` The prefix used for System property parameters.
`static String`	`VAADIN_SERVLET_RESOURCES` The path to meta-inf/VAADIN/ where static resources are put on the servlet.
`static String`	`VAADIN_VERSIONS_JSON` The name of platform versions file.

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - REQUIRED_ATMOSPHERE_RUNTIME_VERSION
```
public static final String REQUIRED_ATMOSPHERE_RUNTIME_VERSION
```
    See Also:
    
    Constant Field Values
  - VAADIN_PREFIX
```
public static final String VAADIN_PREFIX
```
    The prefix used for System property parameters.
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_PRODUCTION_MODE
```
public static final String SERVLET_PARAMETER_PRODUCTION_MODE
```
    See Also:
    
    Constant Field Values
  - NPM_TOKEN
```
public static final String NPM_TOKEN
```
    See Also:
    
    Constant Field Values
  - FRONTEND_TOKEN
```
public static final String FRONTEND_TOKEN
```
    See Also:
    
    Constant Field Values
  - GENERATED_TOKEN
```
public static final String GENERATED_TOKEN
```
    See Also:
    
    Constant Field Values
  - EXTERNAL_STATS_FILE_TOKEN
```
public static final String EXTERNAL_STATS_FILE_TOKEN
```
    See Also:
    
    Constant Field Values
  - EXTERNAL_STATS_URL_TOKEN
```
public static final String EXTERNAL_STATS_URL_TOKEN
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_BOWER_MODE
```
@Deprecated
public static final String SERVLET_PARAMETER_BOWER_MODE
```
    Deprecated. the parameter is renamed to SERVLET_PARAMETER_COMPATIBILITY_MODE
    
    enable it if your project is a Polymer 2.0 one, should be removed in V15
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_COMPATIBILITY_MODE
```
public static final String SERVLET_PARAMETER_COMPATIBILITY_MODE
```
    enable it if your project is a Polymer 2.0 one, should be removed in V15
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_ENABLE_DEV_SERVER
```
public static final String SERVLET_PARAMETER_ENABLE_DEV_SERVER
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_REUSE_DEV_SERVER
```
public static final String SERVLET_PARAMETER_REUSE_DEV_SERVER
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_REQUEST_TIMING
```
public static final String SERVLET_PARAMETER_REQUEST_TIMING
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_DISABLE_XSRF_PROTECTION
```
public static final String SERVLET_PARAMETER_DISABLE_XSRF_PROTECTION
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_HEARTBEAT_INTERVAL
```
public static final String SERVLET_PARAMETER_HEARTBEAT_INTERVAL
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_WEB_COMPONENT_DISCONNECT
```
public static final String SERVLET_PARAMETER_WEB_COMPONENT_DISCONNECT
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_CLOSE_IDLE_SESSIONS
```
public static final String SERVLET_PARAMETER_CLOSE_IDLE_SESSIONS
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_PUSH_MODE
```
public static final String SERVLET_PARAMETER_PUSH_MODE
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_PUSH_URL
```
public static final String SERVLET_PARAMETER_PUSH_URL
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_SYNC_ID_CHECK
```
public static final String SERVLET_PARAMETER_SYNC_ID_CHECK
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_SEND_URLS_AS_PARAMETERS
```
public static final String SERVLET_PARAMETER_SEND_URLS_AS_PARAMETERS
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_PUSH_SUSPEND_TIMEOUT_LONGPOLLING
```
public static final String SERVLET_PARAMETER_PUSH_SUSPEND_TIMEOUT_LONGPOLLING
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_MAX_MESSAGE_SUSPEND_TIMEOUT
```
public static final String SERVLET_PARAMETER_MAX_MESSAGE_SUSPEND_TIMEOUT
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_JSBUNDLE
```
public static final String SERVLET_PARAMETER_JSBUNDLE
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_POLYFILLS
```
public static final String SERVLET_PARAMETER_POLYFILLS
```
    See Also:
    
    Constant Field Values
  - POLYFILLS_DEFAULT_VALUE
```
public static final String POLYFILLS_DEFAULT_VALUE
```
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_BROTLI
```
public static final String SERVLET_PARAMETER_BROTLI
```
    Configuration name for the parameter that determines whether Brotli compression should be used for static resources in cases when a precompressed file is available.
    
    See Also:
    
    Constant Field Values
  - LOAD_ES5_ADAPTERS
```
public static final String LOAD_ES5_ADAPTERS
```
    Configuration name for loading the ES5 adapters.
    
    See Also:
    
    Constant Field Values
  - FRONTEND_URL_ES6
```
public static final String FRONTEND_URL_ES6
```
    Configuration name for the frontend URL prefix for ES6.
    
    See Also:
    
    Constant Field Values
  - FRONTEND_URL_ES5
```
public static final String FRONTEND_URL_ES5
```
    Configuration name for the frontend URL prefix for ES5.
    
    See Also:
    
    Constant Field Values
  - FRONTEND_URL_ES6_DEFAULT_VALUE
```
public static final String FRONTEND_URL_ES6_DEFAULT_VALUE
```
    Default frontend URL prefix for ES6.
    
    See Also:
    
    Constant Field Values
  - FRONTEND_URL_ES5_DEFAULT_VALUE
```
public static final String FRONTEND_URL_ES5_DEFAULT_VALUE
```
    Default frontend URL prefix for ES.
    
    See Also:
    
    Constant Field Values
  - FRONTEND_URL_DEV_DEFAULT
```
public static final String FRONTEND_URL_DEV_DEFAULT
```
    Default frontend URL prefix for development.
    
    See Also:
    
    Constant Field Values
  - DISABLE_WEBJARS
```
public static final String DISABLE_WEBJARS
```
    Configuration name for the parameter that determines if Flow should use webJars or not.
    
    See Also:
    
    Constant Field Values
  - USE_ORIGINAL_FRONTEND_RESOURCES
```
public static final String USE_ORIGINAL_FRONTEND_RESOURCES
```
    Configuration name for the parameter that determines if Flow should use bundled fragments or not.
    
    See Also:
    
    Constant Field Values
  - I18N_PROVIDER
```
public static final String I18N_PROVIDER
```
    I18N provider property.
    
    See Also:
    
    Constant Field Values
  - DISABLE_AUTOMATIC_SERVLET_REGISTRATION
```
public static final String DISABLE_AUTOMATIC_SERVLET_REGISTRATION
```
    Configuration name for the parameter that determines if Flow should automatically register servlets needed for the application to work.
    
    See Also:
    
    Constant Field Values
  - COMPILED_WEB_COMPONENTS_PATH
```
public static final String COMPILED_WEB_COMPONENTS_PATH
```
    Configuration name for the parameter that sets the compiled web components path. The path should be the same as webComponentOutputDirectoryName in the maven plugin that transpiles ES6 code. This path is only used for generated web components (server side web components) module in case they are transpiled: web component UI imports them as dependencies.
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_STATISTICS_JSON
```
public static final String SERVLET_PARAMETER_STATISTICS_JSON
```
    Configuration name for the WebPack profile statistics json file to use to determine template contents.
    File needs to be available either for the ClassLoader as a resource, or as a static web resource. By default it returns the value in STATISTICS_JSON_DEFAULT
    
    See Also:
    
    Constant Field Values
  - STATISTICS_JSON_DEFAULT
```
public static final String STATISTICS_JSON_DEFAULT
```
    Default path for the WebPack profile statistics json file. It can be modified by setting the system property "statistics.file.path".
    
    See Also:
    
    Constant Field Values
  - PACKAGE_JSON
```
public static final String PACKAGE_JSON
```
    Name of the npm main file.
    
    See Also:
    
    Constant Field Values
  - COMPATIBILITY_RESOURCES_FRONTEND_DEFAULT
```
public static final String COMPATIBILITY_RESOURCES_FRONTEND_DEFAULT
```
    Location for the frontend resources in jar files for compatibility mode (also obsolete but supported for NPM mode).
    
    See Also:
    
    Constant Field Values
  - RESOURCES_FRONTEND_DEFAULT
```
public static final String RESOURCES_FRONTEND_DEFAULT
```
    Location for the frontend resources in jar files.
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_DEVMODE_WEBPACK_TIMEOUT
```
public static final String SERVLET_PARAMETER_DEVMODE_WEBPACK_TIMEOUT
```
    Configuration name for the time waiting for webpack output success or error pattern defined in SERVLET_PARAMETER_DEVMODE_WEBPACK_SUCCESS_PATTERN and SERVLET_PARAMETER_DEVMODE_WEBPACK_ERROR_PATTERN parameters.
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_DEVMODE_WEBPACK_SUCCESS_PATTERN
```
public static final String SERVLET_PARAMETER_DEVMODE_WEBPACK_SUCCESS_PATTERN
```
    Configuration name for the pattern used to inspect the webpack output to assure it is up and running. Default value is defined in DevModeHandler as the : Compiled expression.
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_DEVMODE_WEBPACK_ERROR_PATTERN
```
public static final String SERVLET_PARAMETER_DEVMODE_WEBPACK_ERROR_PATTERN
```
    Configuration name for the pattern used to inspect the webpack output to detecting when compilation failed. Default value is defined in DevModeHandler as the : Failed expression.
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_DEVMODE_WEBPACK_OPTIONS
```
public static final String SERVLET_PARAMETER_DEVMODE_WEBPACK_OPTIONS
```
    Configuration name for adding extra options to the webpack-dev-server.
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_DEVMODE_OPTIMIZE_BUNDLE
```
public static final String SERVLET_PARAMETER_DEVMODE_OPTIMIZE_BUNDLE
```
    Boolean parameter for enabling/disabling bytecode scanning in dev mode. If enabled, entry points are scanned for reachable frontend resources. If disabled, all classes on the classpath are scanned.
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_DEVMODE_TRANSPILE
```
public static final String SERVLET_PARAMETER_DEVMODE_TRANSPILE
```
    Boolean parameter for enabling/disabling transpilation for IE11 with the BabelMultiTargetPlugin in dev mode.
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_DEVMODE_TRANSPILE_DEFAULT
```
public static final boolean SERVLET_PARAMETER_DEVMODE_TRANSPILE_DEFAULT
```
    Default value of SERVLET_PARAMETER_DEVMODE_TRANSPILE.
    
    See Also:
    
    Constant Field Values
  - SERVLET_PARAMETER_ENABLE_PNPM
```
public static final String SERVLET_PARAMETER_ENABLE_PNPM
```
    Configuration parameter name for enabling pnpm.
    
    Since:
    
    2.2
    
    See Also:
    
    Constant Field Values
  - REQUIRE_HOME_NODE_EXECUTABLE
```
public static final String REQUIRE_HOME_NODE_EXECUTABLE
```
    Configuration parameter name for requiring node executable installed in home directory.
    
    Since:
    
    See Also:
    
    Constant Field Values
  - META_INF
```
public static final String META_INF
```
    The path used in the vaadin servlet for handling static resources.
    
    See Also:
    
    Constant Field Values
  - VAADIN_MAPPING
```
public static final String VAADIN_MAPPING
```
    The path used in the vaadin servlet for handling static resources.
    
    See Also:
    
    Constant Field Values
  - VAADIN_SERVLET_RESOURCES
```
public static final String VAADIN_SERVLET_RESOURCES
```
    The path to meta-inf/VAADIN/ where static resources are put on the servlet.
    
    See Also:
    
    Constant Field Values
  - VAADIN_BUILD
```
public static final String VAADIN_BUILD
```
    The static build resources folder.
    
    See Also:
    
    Constant Field Values
  - VAADIN_CONFIGURATION
```
public static final String VAADIN_CONFIGURATION
```
    The static configuration resources folder.
    
    See Also:
    
    Constant Field Values
  - VAADIN_BUILD_FILES_PATH
```
public static final String VAADIN_BUILD_FILES_PATH
```
    The prefix used for all internal static files, relative to context root.
    
    See Also:
    
    Constant Field Values
  - LOCAL_FRONTEND_RESOURCES_PATH
```
public static final String LOCAL_FRONTEND_RESOURCES_PATH
```
    Default path for local frontend resources packaged for jar add-ons.
    
    See Also:
    
    Constant Field Values
  - SUPPORTED_NODE_MAJOR_VERSION
```
@Deprecated
public static final int SUPPORTED_NODE_MAJOR_VERSION
```
    Deprecated. this is an internal constant, don't use it
    
    Internal constant.
    
    See Also:
    
    Constant Field Values
  - SUPPORTED_NODE_MINOR_VERSION
```
@Deprecated
public static final int SUPPORTED_NODE_MINOR_VERSION
```
    Deprecated. this is an internal constant, don't use it
    
    Internal constant.
    
    See Also:
    
    Constant Field Values
  - SUPPORTED_NPM_MAJOR_VERSION
```
@Deprecated
public static final int SUPPORTED_NPM_MAJOR_VERSION
```
    Deprecated. this is an internal constant, don't use it
    
    Internal constant.
    
    See Also:
    
    Constant Field Values
  - SUPPORTED_NPM_MINOR_VERSION
```
@Deprecated
public static final int SUPPORTED_NPM_MINOR_VERSION
```
    Deprecated. this is an internal constant, don't use it
    
    Internal constant.
    
    See Also:
    
    Constant Field Values
  - SHOULD_WORK_NODE_MAJOR_VERSION
```
@Deprecated
public static final int SHOULD_WORK_NODE_MAJOR_VERSION
```
    Deprecated. this is an internal constant, don't use it
    
    Internal constant.
    
    See Also:
    
    Constant Field Values
  - SHOULD_WORK_NODE_MINOR_VERSION
```
@Deprecated
public static final int SHOULD_WORK_NODE_MINOR_VERSION
```
    Deprecated. this is an internal constant, don't use it
    
    Internal constant.
    
    See Also:
    
    Constant Field Values
  - SHOULD_WORK_NPM_MAJOR_VERSION
```
@Deprecated
public static final int SHOULD_WORK_NPM_MAJOR_VERSION
```
    Deprecated. this is an internal constant, don't use it
    
    Internal constant.
    
    See Also:
    
    Constant Field Values
  - SHOULD_WORK_NPM_MINOR_VERSION
```
@Deprecated
public static final int SHOULD_WORK_NPM_MINOR_VERSION
```
    Deprecated. this is an internal constant, don't use it
    
    Internal constant.
    
    See Also:
    
    Constant Field Values
  - SUPPORTED_PNPM_MAJOR_VERSION
```
@Deprecated
public static final int SUPPORTED_PNPM_MAJOR_VERSION
```
    Deprecated. this is an internal constant, don't use it
    
    Internal constant.
    
    See Also:
    
    Constant Field Values
  - SUPPORTED_PNPM_MINOR_VERSION
```
@Deprecated
public static final int SUPPORTED_PNPM_MINOR_VERSION
```
    Deprecated. this is an internal constant, don't use it
    
    Internal constant.
    
    See Also:
    
    Constant Field Values
  - EXTERNAL_STATS_FILE
```
public static final String EXTERNAL_STATS_FILE
```
    Property boolean for marking stats.json to be fetched from external location.
    
    See Also:
    
    Constant Field Values
  - EXTERNAL_STATS_URL
```
public static final String EXTERNAL_STATS_URL
```
    Property String for external stats.json location url.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_EXTERNAL_STATS_URL
```
public static final String DEFAULT_EXTERNAL_STATS_URL
```
    Default location to look for the external stats.json.
    
    See Also:
    
    Constant Field Values
  - VAADIN_VERSIONS_JSON
```
public static final String VAADIN_VERSIONS_JSON
```
    The name of platform versions file.
    
    See Also:
    
    Constant Field Values

Class Constants

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

REQUIRED_ATMOSPHERE_RUNTIME_VERSION

VAADIN_PREFIX

SERVLET_PARAMETER_PRODUCTION_MODE

NPM_TOKEN

FRONTEND_TOKEN

GENERATED_TOKEN

EXTERNAL_STATS_FILE_TOKEN

EXTERNAL_STATS_URL_TOKEN

SERVLET_PARAMETER_BOWER_MODE

SERVLET_PARAMETER_COMPATIBILITY_MODE

SERVLET_PARAMETER_ENABLE_DEV_SERVER

SERVLET_PARAMETER_REUSE_DEV_SERVER

SERVLET_PARAMETER_REQUEST_TIMING

SERVLET_PARAMETER_DISABLE_XSRF_PROTECTION

SERVLET_PARAMETER_HEARTBEAT_INTERVAL

SERVLET_PARAMETER_WEB_COMPONENT_DISCONNECT

SERVLET_PARAMETER_CLOSE_IDLE_SESSIONS

SERVLET_PARAMETER_PUSH_MODE

SERVLET_PARAMETER_PUSH_URL

SERVLET_PARAMETER_SYNC_ID_CHECK

SERVLET_PARAMETER_SEND_URLS_AS_PARAMETERS

SERVLET_PARAMETER_PUSH_SUSPEND_TIMEOUT_LONGPOLLING

SERVLET_PARAMETER_MAX_MESSAGE_SUSPEND_TIMEOUT

SERVLET_PARAMETER_JSBUNDLE

SERVLET_PARAMETER_POLYFILLS

POLYFILLS_DEFAULT_VALUE

SERVLET_PARAMETER_BROTLI

LOAD_ES5_ADAPTERS

FRONTEND_URL_ES6

FRONTEND_URL_ES5

FRONTEND_URL_ES6_DEFAULT_VALUE

FRONTEND_URL_ES5_DEFAULT_VALUE

FRONTEND_URL_DEV_DEFAULT

DISABLE_WEBJARS

USE_ORIGINAL_FRONTEND_RESOURCES

I18N_PROVIDER

DISABLE_AUTOMATIC_SERVLET_REGISTRATION

COMPILED_WEB_COMPONENTS_PATH

SERVLET_PARAMETER_STATISTICS_JSON

STATISTICS_JSON_DEFAULT

PACKAGE_JSON

COMPATIBILITY_RESOURCES_FRONTEND_DEFAULT

RESOURCES_FRONTEND_DEFAULT

SERVLET_PARAMETER_DEVMODE_WEBPACK_TIMEOUT

SERVLET_PARAMETER_DEVMODE_WEBPACK_SUCCESS_PATTERN

SERVLET_PARAMETER_DEVMODE_WEBPACK_ERROR_PATTERN

SERVLET_PARAMETER_DEVMODE_WEBPACK_OPTIONS

SERVLET_PARAMETER_DEVMODE_OPTIMIZE_BUNDLE

SERVLET_PARAMETER_DEVMODE_TRANSPILE

SERVLET_PARAMETER_DEVMODE_TRANSPILE_DEFAULT

SERVLET_PARAMETER_ENABLE_PNPM

REQUIRE_HOME_NODE_EXECUTABLE

META_INF

VAADIN_MAPPING

VAADIN_SERVLET_RESOURCES

VAADIN_BUILD

VAADIN_CONFIGURATION

VAADIN_BUILD_FILES_PATH

LOCAL_FRONTEND_RESOURCES_PATH

SUPPORTED_NODE_MAJOR_VERSION

SUPPORTED_NODE_MINOR_VERSION

SUPPORTED_NPM_MAJOR_VERSION

SUPPORTED_NPM_MINOR_VERSION

SHOULD_WORK_NODE_MAJOR_VERSION

SHOULD_WORK_NODE_MINOR_VERSION

SHOULD_WORK_NPM_MAJOR_VERSION

SHOULD_WORK_NPM_MINOR_VERSION

SUPPORTED_PNPM_MAJOR_VERSION

SUPPORTED_PNPM_MINOR_VERSION

EXTERNAL_STATS_FILE

EXTERNAL_STATS_URL

DEFAULT_EXTERNAL_STATS_URL

VAADIN_VERSIONS_JSON