Enum tsconfig::Target

pub enum Target {
    Es3,
    Es5,
    Es2015,
    Es6,
    Es2016,
    Es7,
    Es2017,
    Es2018,
    Es2019,
    Es2020,
    EsNext,
    Other(String),
}

The transpilation target for the emitted JavaScript.

Modern browsers support all ES6 features, so ES6 is a good choice. You might choose to set a lower target if your code is deployed to older environments, or a higher target if your code is guaranteed to run in newer environments.

The target setting changes which JS features are downleveled and which are left intact. For example, an arrow function () => this will be turned into an equivalent function expression if target is ES5 or lower.

Changing target also changes the default value of lib. You may “mix and match” target and lib settings as desired, but you could just set target for convenience.

For developer platforms like Node will have a certain baselines for the their target depending on their version. You can find a set of community organized TSConfigs at tsconfig/bases for common platforms and their versions.

The special ESNext value refers to the highest version your version of TypeScript supports. This setting should be used with caution, since it doesn’t mean the same thing between different TypeScript versions and can make upgrades less predictable.

Variants

Es3

Es5

Es2015

Es6

Es2016

Es7

Es2017

Es2018

Es2019

Es2020

EsNext

Other(String)

Trait Implementations

impl Clone for Target

fn clone(&self) -> Target

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Target

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Target

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl PartialEq<Target> for Target

fn eq(&self, other: &Target) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Target) -> bool

This method tests for !=.

impl StructuralPartialEq for Target