Package com.google.javascript.jscomp

Enum Class CompilerOptions.Es6SubclassTranspilation

java.lang.Object

java.lang.Enum<CompilerOptions.Es6SubclassTranspilation>

com.google.javascript.jscomp.CompilerOptions.Es6SubclassTranspilation

All Implemented Interfaces:

Serializable, Comparable<CompilerOptions.Es6SubclassTranspilation>, Constable

Enclosing class:

CompilerOptions

public static enum CompilerOptions.Es6SubclassTranspilation
extends Enum<CompilerOptions.Es6SubclassTranspilation>

Configures the transpiled output for ES6 classes when targeting ES5.

This is needed for transpilation of ES6 classes that extend some unknown superclass, in case that superclass is still a native ES6 class at runtime (not transpiled to ES5).

The default is CONCISE_UNSAFE, which assumes that if a superclass in an extends clause cannot be statically analyzed, it's safe to assume it is an ES5 class.

The "safe" behavior relies on $jscomp.construct, which is our wrapper for Reflect.construct. This is correct, but has the disadvantage of pulling in more helper utilities into the compiled output and of the transpiled output being slightly larger.

TODO: b/36789413 - always enable the "safe" transpilation.

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
CONCISE_UNSAFE
SAFE_REFLECT_CONSTRUCT

Method Summary

Modifier and Type	Method	Description
static CompilerOptions.Es6SubclassTranspilation	valueOf(String name)	Returns the enum constant of this class with the specified name.
static CompilerOptions.Es6SubclassTranspilation[]	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

CONCISE_UNSAFE

public static final CompilerOptions.Es6SubclassTranspilation CONCISE_UNSAFE

SAFE_REFLECT_CONSTRUCT

public static final CompilerOptions.Es6SubclassTranspilation SAFE_REFLECT_CONSTRUCT

Method Details

values

public static CompilerOptions.Es6SubclassTranspilation[] 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.Es6SubclassTranspilation 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