JavaScript Mapping for Constants
Here are the sample constant definitions once more:
Slice
module Example {
const bool AppendByDefault = true;
const byte LowerNibble = 0x0f;
const string Advice = "Don't Panic!";
const short TheAnswer = 42;
const double PI = 3.1416;
enum Fruit { Apple, Pear, Orange };
const Fruit FavoriteFruit = Pear;
};
For each constant, the JavaScript mapping generates a read-only property of the same name in the enclosing scope as shown below:
JavaScript
Object.defineProperty(Example, 'AppendByDefault', {value: true});
Object.defineProperty(Example, 'LowerNibble', {value: 15});
Object.defineProperty(Example, 'Advice', {value: "Don't Panic!"});
Object.defineProperty(Example, 'TheAnswer', {value: 42});
Object.defineProperty(Example, 'PI', {value: 3.1416});
Object.defineProperty(Example, 'FavoriteFruit', {value: Fruit.Pear});
Slice string literals that contain non-ASCII characters or universal character names are mapped to JavaScript string literals with universal character names. For example:
Slice
const string Egg = "œuf"; const string Heart = "c\u0153ur"; const string Banana = "\U0001F34C";
is mapped to:
JavaScript
Object.defineProperty(Example, 'Egg', {value: "\u0153uf"});
Object.defineProperty(Example 'Heart', {value: "c\u0153ur"});
Object.defineProperty(Example, 'Banana', {value: "\ud83c\udf4c"});