Package com.google.javascript.jscomp

Enum Class CompilerOptions.LanguageMode

java.lang.Object

java.lang.Enum<CompilerOptions.LanguageMode>

com.google.javascript.jscomp.CompilerOptions.LanguageMode

All Implemented Interfaces:

Serializable, Comparable<CompilerOptions.LanguageMode>, Constable

Enclosing class:

CompilerOptions

public static enum CompilerOptions.LanguageMode
extends Enum<CompilerOptions.LanguageMode>

A language mode applies to the whole compilation job. As a result, the compiler does not support mixed strict and non-strict in the same compilation job. Therefore, the 'use strict' directive is ignored when the language mode is not strict.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
ECMASCRIPT_2015	ECMAScript standard approved in 2015.
ECMASCRIPT_2016	ECMAScript standard approved in 2016.
ECMASCRIPT_2017	ECMAScript standard approved in 2017.
ECMASCRIPT_2018	ECMAScript standard approved in 2018.
ECMASCRIPT_2019	ECMAScript standard approved in 2019.
ECMASCRIPT_2020	ECMAScript standard approved in 2020.
ECMASCRIPT_2021	ECMAScript standard approved in 2021.
ECMASCRIPT_NEXT	ECMAScript features from the upcoming standard.
ECMASCRIPT3	90's JavaScript
ECMASCRIPT5	Traditional JavaScript
ECMASCRIPT5_STRICT	Nitpicky, traditional JavaScript
NO_TRANSPILE	For languageOut only.
STABLE	Use stable features.
UNSTABLE	For testing only.
UNSUPPORTED	For testing only.

Field Summary

Fields

Modifier and Type	Field	Description
static final CompilerOptions.LanguageMode	STABLE_IN	The default input language level of JSCompiler.
static final CompilerOptions.LanguageMode	STABLE_OUT	The default output language level of JSCompiler.

Method Summary

Modifier and Type	Method	Description
static @Nullable CompilerOptions.LanguageMode	fromString(String value)
FeatureSet	toFeatureSet()
static List<String>	validCommandLineNames()	Returns a list of valid names used to select a `LanguageMode` on the command line.
static CompilerOptions.LanguageMode	valueOf(String name)	Returns the enum constant of this class with the specified name.
static CompilerOptions.LanguageMode[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

ECMASCRIPT3

public static final CompilerOptions.LanguageMode ECMASCRIPT3

90's JavaScript

ECMASCRIPT5

public static final CompilerOptions.LanguageMode ECMASCRIPT5

Traditional JavaScript

ECMASCRIPT5_STRICT

public static final CompilerOptions.LanguageMode ECMASCRIPT5_STRICT

Nitpicky, traditional JavaScript

ECMASCRIPT_2015

public static final CompilerOptions.LanguageMode ECMASCRIPT_2015

ECMAScript standard approved in 2015.

ECMASCRIPT_2016

public static final CompilerOptions.LanguageMode ECMASCRIPT_2016

ECMAScript standard approved in 2016. Adds the exponent operator (**).

ECMASCRIPT_2017

public static final CompilerOptions.LanguageMode ECMASCRIPT_2017

ECMAScript standard approved in 2017. Adds async/await and other syntax

ECMASCRIPT_2018

public static final CompilerOptions.LanguageMode ECMASCRIPT_2018

ECMAScript standard approved in 2018. Adds "..." in object literals/patterns.

ECMASCRIPT_2019

public static final CompilerOptions.LanguageMode ECMASCRIPT_2019

ECMAScript standard approved in 2019. Adds catch blocks with no error binding.

ECMASCRIPT_2020

public static final CompilerOptions.LanguageMode ECMASCRIPT_2020

ECMAScript standard approved in 2020.

ECMASCRIPT_2021

public static final CompilerOptions.LanguageMode ECMASCRIPT_2021

ECMAScript standard approved in 2021.

ECMASCRIPT_NEXT

public static final CompilerOptions.LanguageMode ECMASCRIPT_NEXT

ECMAScript features from the upcoming standard.

STABLE

public static final CompilerOptions.LanguageMode STABLE

Use stable features.

NO_TRANSPILE

public static final CompilerOptions.LanguageMode NO_TRANSPILE

For languageOut only. The same language mode as the input.

UNSTABLE

public static final CompilerOptions.LanguageMode UNSTABLE

For testing only. Features that can be parsed/checked but cannot necessarily be understood by the rest of the compiler yet.

UNSUPPORTED

public static final CompilerOptions.LanguageMode UNSUPPORTED

For testing only. Features that can be parsed but cannot necessarily be understood by the rest of the compiler yet.

Field Details

STABLE_IN

public static final CompilerOptions.LanguageMode STABLE_IN

The default input language level of JSCompiler.

STABLE_OUT

public static final CompilerOptions.LanguageMode STABLE_OUT

The default output language level of JSCompiler.

Method Details

values

public static CompilerOptions.LanguageMode[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static CompilerOptions.LanguageMode valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

validCommandLineNames

public static List<String> validCommandLineNames()

Returns a list of valid names used to select a `LanguageMode` on the command line.

fromString

public static @Nullable CompilerOptions.LanguageMode fromString(String value)

toFeatureSet

public FeatureSet toFeatureSet()