52 lines
2.3 KiB
JavaScript
Executable File
52 lines
2.3 KiB
JavaScript
Executable File
/**
|
|
* We extend `Date` during builds and revalidates to ensure that prerenders don't observe the clock as a source of IO
|
|
* When cacheComponents is enabled. The current time is a form of IO even though it resolves synchronously. When cacheComponents is
|
|
* enabled we need to ensure that clock time is excluded from prerenders unless it is cached.
|
|
*
|
|
* There is tension here because time is used for both output and introspection. While arbitrary we intend to reserve
|
|
* `Date` for output use cases and `performance` for introspection use cases. If you want to measure
|
|
* how long something takes use `performance.timeOrigin` and `performance.now()` rather than `Date.now()` for instance.
|
|
*
|
|
* The extensions here never error nor alter the underlying Date objects, strings, and numbers created and thus should be transparent to callers.
|
|
*/ "use strict";
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
const _utils = require("./utils");
|
|
function createNow(originalNow) {
|
|
return ({
|
|
now: function now() {
|
|
(0, _utils.io)('`Date.now()`', 'time');
|
|
return originalNow();
|
|
}
|
|
})['now'.slice()].bind(null);
|
|
}
|
|
function createDate(originalConstructor) {
|
|
const properties = Object.getOwnPropertyDescriptors(originalConstructor);
|
|
properties.now.value = createNow(originalConstructor.now);
|
|
const apply = Reflect.apply;
|
|
const construct = Reflect.construct;
|
|
const newConstructor = Object.defineProperties(// Ideally this should not minify the name.
|
|
function Date1() {
|
|
if (new.target === undefined) {
|
|
(0, _utils.io)('`Date()`', 'time');
|
|
return apply(originalConstructor, undefined, arguments);
|
|
}
|
|
if (arguments.length === 0) {
|
|
(0, _utils.io)('`new Date()`', 'time');
|
|
}
|
|
return construct(originalConstructor, arguments, new.target);
|
|
}, properties);
|
|
Object.defineProperty(originalConstructor.prototype, 'constructor', {
|
|
value: newConstructor
|
|
});
|
|
return newConstructor;
|
|
}
|
|
try {
|
|
// eslint-disable-next-line no-native-reassign
|
|
Date = createDate(Date);
|
|
} catch {
|
|
console.error('Failed to install `Date` class extension. When using `experimental.cacheComponents`, APIs that read the current time will not correctly trigger dynamic behavior.');
|
|
}
|
|
|
|
//# sourceMappingURL=date.js.map
|