compat

Documentation

Index

• Variables
• type Engine
• type Feature
  • func UnsupportedFeatures(constraints map[Engine][]int) (unsupported Feature)
  • func (features Feature) Has(feature Feature) bool

Variables

var Table = map[Feature]map[Engine][]int{
	ArraySpread: {
		Chrome:  {46},
		Edge:    {12},
		ES:      {2015},
		Firefox: {27},
		IOS:     {8},
		Node:    {5},
		Safari:  {7, 1},
	},
	Arrow: {
		Chrome:  {45},
		Edge:    {12},
		ES:      {2015},
		Firefox: {22},
		IOS:     {10},
		Node:    {4},
		Safari:  {10},
	},
	AsyncAwait: {
		Chrome:  {55},
		Edge:    {15},
		ES:      {2017},
		Firefox: {52},
		IOS:     {10, 3},
		Node:    {7, 6},
		Safari:  {10, 1},
	},
	AsyncGenerator: {
		Chrome:  {63},
		Edge:    {79},
		ES:      {2018},
		Firefox: {57},
		IOS:     {12},
		Node:    {10, 0},
		Safari:  {12},
	},
	BigInt: {
		Chrome:  {67},
		Edge:    {79},
		ES:      {2020},
		Firefox: {68},
		Node:    {10, 4},
		Safari:  {14},
	},
	Class: {
		Chrome:  {49},
		Edge:    {13},
		ES:      {2015},
		Firefox: {45},
		IOS:     {9},
		Node:    {6},
		Safari:  {9},
	},
	ClassField: {
		Chrome:  {72},
		Edge:    {79},
		Firefox: {69},
		Node:    {12, 0},
		Safari:  {14},
	},
	ClassPrivateAccessor: {
		Chrome: {84},
		Edge:   {84},
	},
	ClassPrivateField: {
		Chrome: {74},
		Edge:   {79},
		Node:   {12, 0},
	},
	ClassPrivateMethod: {
		Chrome: {84},
		Edge:   {84},
	},
	ClassPrivateStaticAccessor: {
		Chrome: {84},
		Edge:   {84},
	},
	ClassPrivateStaticField: {
		Chrome: {74},
		Edge:   {79},
		Node:   {12, 0},
	},
	ClassPrivateStaticMethod: {
		Chrome: {84},
		Edge:   {84},
	},
	ClassStaticField: {
		Chrome:  {72},
		Edge:    {79},
		Firefox: {75},
		Node:    {12, 0},
	},
	Const: {
		Chrome:  {5},
		Edge:    {12},
		ES:      {2015},
		Firefox: {3},
		IOS:     {6},
		Node:    {0, 12},
		Safari:  {3, 1},
	},
	DefaultArgument: {
		Chrome:  {49},
		Edge:    {14},
		ES:      {2015},
		Firefox: {15},
		IOS:     {10},
		Node:    {6},
		Safari:  {10},
	},
	Destructuring: {
		Chrome:  {49},
		Edge:    {14},
		ES:      {2015},
		Firefox: {2},
		IOS:     {8},
		Node:    {6},
		Safari:  {7, 1},
	},
	ExponentOperator: {
		Chrome:  {52},
		Edge:    {14},
		ES:      {2016},
		Firefox: {52},
		IOS:     {10, 3},
		Node:    {7},
		Safari:  {10, 1},
	},
	ForAwait: {
		Chrome:  {63},
		Edge:    {79},
		ES:      {2018},
		Firefox: {57},
		IOS:     {12},
		Node:    {10, 0},
		Safari:  {12},
	},
	ForOf: {
		Chrome:  {38},
		Edge:    {12},
		ES:      {2015},
		Firefox: {13},
		IOS:     {8},
		Node:    {0, 12},
		Safari:  {7, 1},
	},
	Generator: {
		Chrome:  {39},
		Edge:    {13},
		ES:      {2015},
		Firefox: {27},
		IOS:     {10},
		Node:    {4},
		Safari:  {10},
	},
	Hashbang: {
		Chrome:  {74},
		Edge:    {79},
		Firefox: {67},
		IOS:     {13, 4},
		Node:    {12, 0},
		Safari:  {13, 1},
	},
	ImportMeta: {
		Chrome:  {64},
		Edge:    {79},
		ES:      {2020},
		Firefox: {62},
		IOS:     {12},
		Safari:  {11, 1},
	},
	Let: {
		Chrome:  {49},
		Edge:    {12},
		ES:      {2015},
		Firefox: {44},
		IOS:     {10},
		Node:    {6},
		Safari:  {10},
	},
	LogicalAssignment: {
		Chrome:  {85},
		Firefox: {79},
		Safari:  {14},
	},
	NestedRestBinding: {
		Chrome:  {49},
		Edge:    {14},
		ES:      {2016},
		Firefox: {47},
		IOS:     {10, 3},
		Node:    {6},
		Safari:  {10, 1},
	},
	NewTarget: {
		Chrome:  {46},
		Edge:    {13},
		ES:      {2015},
		Firefox: {41},
		IOS:     {10},
		Node:    {5},
		Safari:  {10},
	},
	NullishCoalescing: {
		Chrome:  {80},
		Edge:    {80},
		ES:      {2020},
		Firefox: {72},
		IOS:     {13, 4},
		Node:    {14, 0},
		Safari:  {13, 1},
	},
	ObjectExtensions: {
		Chrome:  {44},
		Edge:    {12},
		ES:      {2015},
		Firefox: {34},
		IOS:     {8},
		Node:    {4},
		Safari:  {7, 1},
	},
	ObjectRestSpread: {
		Chrome:  {60},
		Edge:    {79},
		ES:      {2018},
		Firefox: {55},
		IOS:     {11, 3},
		Node:    {8, 3},
		Safari:  {11, 1},
	},
	OptionalCatchBinding: {
		Chrome:  {66},
		Edge:    {79},
		ES:      {2019},
		Firefox: {58},
		IOS:     {11, 3},
		Node:    {10, 0},
		Safari:  {11, 1},
	},
	OptionalChain: {
		Chrome:  {80},
		Edge:    {80},
		ES:      {2020},
		Firefox: {74},
		IOS:     {13, 4},
		Node:    {14, 0},
		Safari:  {13, 1},
	},
	RestArgument: {
		Chrome:  {47},
		Edge:    {12},
		ES:      {2015},
		Firefox: {15},
		IOS:     {10},
		Node:    {6},
		Safari:  {10},
	},
	TemplateLiteral: {
		Chrome:  {41},
		Edge:    {12},
		ES:      {2015},
		Firefox: {34},
		IOS:     {9},
		Node:    {4},
		Safari:  {9},
	},
	TopLevelAwait: {},
}

Types

type Engine

type Engine uint8

const (
	Chrome Engine = iota
	Edge
	ES
	Firefox
	IOS
	Node
	Safari
)

type Feature

type Feature uint64

const (
	ArraySpread Feature = 1 << iota
	Arrow
	AsyncAwait
	AsyncGenerator
	BigInt
	Class
	ClassField
	ClassPrivateAccessor
	ClassPrivateField
	ClassPrivateMethod
	ClassPrivateStaticAccessor
	ClassPrivateStaticField
	ClassPrivateStaticMethod
	ClassStaticField
	Const
	DefaultArgument
	Destructuring
	ExponentOperator
	ForAwait
	ForOf
	Generator
	Hashbang
	ImportMeta
	Let
	LogicalAssignment
	NestedRestBinding
	NewTarget
	NullishCoalescing
	ObjectExtensions
	ObjectRestSpread
	OptionalCatchBinding
	OptionalChain
	RestArgument
	TemplateLiteral
	TopLevelAwait
)

func UnsupportedFeatures

func UnsupportedFeatures(constraints map[Engine][]int) (unsupported Feature)

Return all features that are not available in at least one environment

func (Feature) Has

func (features Feature) Has(feature Feature) bool