32 lines
801 B
Plaintext
32 lines
801 B
Plaintext
/**
|
|
* https://tc39.es/ecma402/#sec-getstringorbooleanoption
|
|
* @param opts
|
|
* @param prop
|
|
* @param values
|
|
* @param trueValue
|
|
* @param falsyValue
|
|
* @param fallback
|
|
*/
|
|
import { ToString } from './262';
|
|
export function GetStringOrBooleanOption(opts, prop, values, trueValue, falsyValue, fallback) {
|
|
var value = opts[prop];
|
|
if (value === undefined) {
|
|
return fallback;
|
|
}
|
|
if (value === true) {
|
|
return trueValue;
|
|
}
|
|
var valueBoolean = Boolean(value);
|
|
if (valueBoolean === false) {
|
|
return falsyValue;
|
|
}
|
|
value = ToString(value);
|
|
if (value === 'true' || value === 'false') {
|
|
return fallback;
|
|
}
|
|
if ((values || []).indexOf(value) === -1) {
|
|
throw new RangeError("Invalid value ".concat(value));
|
|
}
|
|
return value;
|
|
}
|