How to use es6-symbol - 10 common examples
To help you get started, we’ve selected a few es6-symbol examples, based on popular ways it is used in public projects.
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module.exports = function () {
var symbol;
if (typeof Symbol !== 'function') return false;
symbol = Symbol('test symbol');
try { String(symbol); } catch (e) { return false; }
// Return 'true' also for polyfills
if (!validTypes[typeof Symbol.iterator]) return false;
if (!validTypes[typeof Symbol.toPrimitive]) return false;
if (!validTypes[typeof Symbol.toStringTag]) return false;
return true;
};// We use this Normalizr schemas to transform API responses from a nested form
// to a flat form where repos and users are placed in `entities`, and nested
// JSON objects are replaced with their IDs. This is very convenient for
// consumption by reducers, because we can easily build a normalized tree
// and keep it updated as we fetch more data.
// Read more about Normalizr: https://github.com/paularmstrong/normalizr
// GitHub's API may return results with uppercase letters while the query
// doesn't contain any. For example, "someuser" could result in "SomeUser"
// leading to a frozen UI as it wouldn't find "someuser" in the entities.
// That's why we're forcing lower cases down there.
// Action key that carries API call info interpreted by this Redux middleware.
export const CALL_API = Symbol('Call API')
// A Redux middleware that interprets actions with CALL_API info specified.
// Performs the call and promises when such actions are dispatched.
export default store => next => action => {
const callAPI = action[CALL_API]
if (typeof callAPI === 'undefined') {
return next(action)
}
let { endpoint } = callAPI
const { schema, types } = callAPI
if (typeof endpoint === 'function') {
endpoint = endpoint(store.getState())
}module.exports = function () {
var symbol;
if (typeof Symbol !== 'function') return false;
symbol = Symbol('test symbol');
try {
if (String(symbol) !== 'Symbol (test symbol)') return false;
} catch (e) { return false; }
if (typeof Symbol.iterator === 'symbol') return true;
// Return 'true' for polyfills
if (typeof Symbol.isConcatSpreadable !== 'object') return false;
if (typeof Symbol.isRegExp !== 'object') return false;
if (typeof Symbol.iterator !== 'object') return false;
if (typeof Symbol.toPrimitive !== 'object') return false;
if (typeof Symbol.toStringTag !== 'object') return false;
if (typeof Symbol.unscopables !== 'object') return false;
return true;
};module.exports = function () {
var symbol;
if (typeof Symbol !== 'function') return false;
symbol = Symbol('test symbol');
try { String(symbol); } catch (e) { return false; }
if (typeof Symbol.iterator === 'symbol') return true;
// Return 'true' for polyfills
if (typeof Symbol.isConcatSpreadable !== 'object') return false;
if (typeof Symbol.isRegExp !== 'object') return false;
if (typeof Symbol.iterator !== 'object') return false;
if (typeof Symbol.toPrimitive !== 'object') return false;
if (typeof Symbol.toStringTag !== 'object') return false;
if (typeof Symbol.unscopables !== 'object') return false;
return true;
};module.exports = function () {
var symbol;
if (typeof Symbol !== 'function') return false;
symbol = Symbol('test symbol');
try {
if (String(symbol) !== 'Symbol (test symbol)') return false;
} catch (e) { return false; }
if (typeof Symbol.iterator === 'symbol') return true;
// Return 'true' for polyfills
if (typeof Symbol.isConcatSpreadable !== 'object') return false;
if (typeof Symbol.isRegExp !== 'object') return false;
if (typeof Symbol.iterator !== 'object') return false;
if (typeof Symbol.toPrimitive !== 'object') return false;
if (typeof Symbol.toStringTag !== 'object') return false;
if (typeof Symbol.unscopables !== 'object') return false;
return true;
};module.exports = function () {
var symbol;
if (typeof Symbol !== 'function') return false;
symbol = Symbol('test symbol');
try { String(symbol); } catch (e) { return false; }
if (typeof Symbol.iterator === 'symbol') return true;
// Return 'true' for polyfills
if (typeof Symbol.isConcatSpreadable !== 'object') return false;
if (typeof Symbol.isRegExp !== 'object') return false;
if (typeof Symbol.iterator !== 'object') return false;
if (typeof Symbol.toPrimitive !== 'object') return false;
if (typeof Symbol.toStringTag !== 'object') return false;
if (typeof Symbol.unscopables !== 'object') return false;
return true;
};module.exports = function () {
var symbol;
if (typeof Symbol !== 'function') return false;
symbol = Symbol('test symbol');
try {
if (String(symbol) !== 'Symbol (test symbol)') return false;
} catch (e) { return false; }
if (typeof Symbol.iterator === 'symbol') return true;
// Return 'true' for polyfills
if (typeof Symbol.isConcatSpreadable !== 'object') return false;
if (typeof Symbol.isRegExp !== 'object') return false;
if (typeof Symbol.iterator !== 'object') return false;
if (typeof Symbol.toPrimitive !== 'object') return false;
if (typeof Symbol.toStringTag !== 'object') return false;
if (typeof Symbol.unscopables !== 'object') return false;
return true;
};module.exports = function () {
var symbol;
if (typeof Symbol !== 'function') return false;
symbol = Symbol('test symbol');
try { String(symbol); } catch (e) { return false; }
if (typeof Symbol.iterator === 'symbol') return true;
// Return 'true' for polyfills
if (typeof Symbol.isConcatSpreadable !== 'object') return false;
if (typeof Symbol.isRegExp !== 'object') return false;
if (typeof Symbol.iterator !== 'object') return false;
if (typeof Symbol.toPrimitive !== 'object') return false;
if (typeof Symbol.toStringTag !== 'object') return false;
if (typeof Symbol.unscopables !== 'object') return false;
return true;
};module.exports = function () {
var symbol;
if (typeof Symbol !== 'function') return false;
symbol = Symbol('test symbol');
try {
if (String(symbol) !== 'Symbol (test symbol)') return false;
} catch (e) { return false; }
if (typeof Symbol.iterator === 'symbol') return true;
// Return 'true' for polyfills
if (typeof Symbol.isConcatSpreadable !== 'object') return false;
if (typeof Symbol.isRegExp !== 'object') return false;
if (typeof Symbol.iterator !== 'object') return false;
if (typeof Symbol.toPrimitive !== 'object') return false;
if (typeof Symbol.toStringTag !== 'object') return false;
if (typeof Symbol.unscopables !== 'object') return false;
return true;
};module.exports = function () {
var symbol;
if (typeof Symbol !== 'function') return false;
symbol = Symbol('test symbol');
try { String(symbol); } catch (e) { return false; }
if (typeof Symbol.iterator === 'symbol') return true;
// Return 'true' for polyfills
if (typeof Symbol.isConcatSpreadable !== 'object') return false;
if (typeof Symbol.isRegExp !== 'object') return false;
if (typeof Symbol.iterator !== 'object') return false;
if (typeof Symbol.toPrimitive !== 'object') return false;
if (typeof Symbol.toStringTag !== 'object') return false;
if (typeof Symbol.unscopables !== 'object') return false;
return true;
};
