File: enumBasics.js

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//// [enumBasics.ts]
// Enum without initializers have first member = 0 and successive members = N + 1
enum E1 {
    A,
    B,
    C
}

// Enum type is a subtype of Number
var x: number = E1.A;

// Enum object type is anonymous with properties of the enum type and numeric indexer
var e = E1;
var e: {
    readonly A: E1.A;
    readonly B: E1.B;
    readonly C: E1.C;
    readonly [n: number]: string;
};
var e: typeof E1;

// Reverse mapping of enum returns string name of property 
var s = E1[e.A];
var s: string;


// Enum with only constant members
enum E2 {
    A = 1, B = 2, C = 3
}

// Enum with only computed members
enum E3 {
    X = 'foo'.length, Y = 4 + 3, Z = +'foo'
}

// Enum with constant members followed by computed members
enum E4 {
    X = 0, Y, Z = 'foo'.length
}

// Enum with > 2 constant members with no initializer for first member, non zero initializer for second element
enum E5 {
    A,
    B = 3,
    C // 4
}

enum E6 {
    A,
    B = 0,
    C // 1
}

// Enum with computed member initializer of type 'any'
enum E7 {
    A = 'foo'['foo']
}

// Enum with computed member initializer of type number
enum E8 {
    B = 'foo'['foo']
}

//Enum with computed member intializer of same enum type
enum E9 {
    A,
    B = A
}

// (refer to .js to validate)
// Enum constant members are propagated
var doNotPropagate = [
    E8.B, E7.A, E4.Z, E3.X, E3.Y, E3.Z
];
// Enum computed members are not propagated
var doPropagate = [
    E9.A, E9.B, E6.B, E6.C, E6.A, E5.A, E5.B, E5.C
];



//// [enumBasics.js]
// Enum without initializers have first member = 0 and successive members = N + 1
var E1;
(function (E1) {
    E1[E1["A"] = 0] = "A";
    E1[E1["B"] = 1] = "B";
    E1[E1["C"] = 2] = "C";
})(E1 || (E1 = {}));
// Enum type is a subtype of Number
var x = E1.A;
// Enum object type is anonymous with properties of the enum type and numeric indexer
var e = E1;
var e;
var e;
// Reverse mapping of enum returns string name of property 
var s = E1[e.A];
var s;
// Enum with only constant members
var E2;
(function (E2) {
    E2[E2["A"] = 1] = "A";
    E2[E2["B"] = 2] = "B";
    E2[E2["C"] = 3] = "C";
})(E2 || (E2 = {}));
// Enum with only computed members
var E3;
(function (E3) {
    E3[E3["X"] = 'foo'.length] = "X";
    E3[E3["Y"] = 7] = "Y";
    E3[E3["Z"] = +'foo'] = "Z";
})(E3 || (E3 = {}));
// Enum with constant members followed by computed members
var E4;
(function (E4) {
    E4[E4["X"] = 0] = "X";
    E4[E4["Y"] = 1] = "Y";
    E4[E4["Z"] = 'foo'.length] = "Z";
})(E4 || (E4 = {}));
// Enum with > 2 constant members with no initializer for first member, non zero initializer for second element
var E5;
(function (E5) {
    E5[E5["A"] = 0] = "A";
    E5[E5["B"] = 3] = "B";
    E5[E5["C"] = 4] = "C"; // 4
})(E5 || (E5 = {}));
var E6;
(function (E6) {
    E6[E6["A"] = 0] = "A";
    E6[E6["B"] = 0] = "B";
    E6[E6["C"] = 1] = "C"; // 1
})(E6 || (E6 = {}));
// Enum with computed member initializer of type 'any'
var E7;
(function (E7) {
    E7[E7["A"] = 'foo'['foo']] = "A";
})(E7 || (E7 = {}));
// Enum with computed member initializer of type number
var E8;
(function (E8) {
    E8[E8["B"] = 'foo'['foo']] = "B";
})(E8 || (E8 = {}));
//Enum with computed member intializer of same enum type
var E9;
(function (E9) {
    E9[E9["A"] = 0] = "A";
    E9[E9["B"] = 0] = "B";
})(E9 || (E9 = {}));
// (refer to .js to validate)
// Enum constant members are propagated
var doNotPropagate = [
    E8.B, E7.A, E4.Z, E3.X, E3.Y, E3.Z
];
// Enum computed members are not propagated
var doPropagate = [
    E9.A, E9.B, E6.B, E6.C, E6.A, E5.A, E5.B, E5.C
];