JavaScript provides a variety of data structures to be used ranging from simple objects over arrays, sets, maps, the weak variants as well as ArrayBuffers. Over the half past year I found myself in the spot to recreate some of the more common structures like Dequeues, count maps and mostly different variants of trees. While looking at the Ecma specification
Tag: ecmascript-6
Graphql error: “using last without before is not supported”
I am using Gatsby + GraphQL + Shopify. I am having an issue retrieving my orders by the last 10. My query looks like this: And it returns this: “message”: “using last without before is not supported” I noticed this issue happening to some other devs: https://community.shopify.com/c/Shopify-Discussion/How-to-get-customer-s-orders-and-sort-by-date-in-descending/m-p/629133/highlight/false#M151241 If you check the docs it says nothing about using before with last:
destructing es6 in array push
i want to use something like destructing assignment in ES6 for having cleaner code but i dont know how to use it in something like pushing in array or anyway can is use it or something similar?. this sample code is in vue js: Answer Try this code: or this: And then you can remove unnecessary words, like this:
Mocha + TypeScript: Cannot use import statement outside a module
I was watching this video in order to learn how to add some simple tests to my Express routes but I am getting all kind of errors while executing a test. The error is: import * as chai from ‘chai’; ^^^^^^ SyntaxError: Cannot use import statement outside a module I have read some similar Stack Overflow questions and GitHub issues
Declare global constants in function javascript on DOMContentLoaded
Is there any way to declare constants when the DOMContentLoaded event triggers, that are accessible outside? Answer If the question is: “Is there any way to declare a constant variable without a value, and assign one to it later?”, then the answer is no. Think of it again: after the declaration, a constant variable’s value must always be the same;
Getting error while referencing the type as index
I have an array of objects with the following structure I need to take each key within each object inside array and form an array out of it. Basically grouping based on the key present in all the objects.If the object has no “values” it should return 0 across the val1,val2,val3. Here I am passing an string, that will be
Angular Material (8) S2591: Cannot find name ‘require’
I am trying to log date/time into the javascript console. The error message I am getting is as follows and was generated by the code below. ETA: the code does work. The dates are going to the console. It is just the Error Message remains Message: ERROR in src/app/kdc/services/customers.api.service.ts(60,9): error TS2591: Cannot find name ‘require’. Do you need to install
Why EventTarget subclass instances lose their names?
The current version of JavaScript implements EventTarget as a class instead of an interface, so you can create an instance of EventTarget with all the expected methods. I tried to copy/paste the EventTarget example in the console (on both Chrome and Firefox) but when I inspect the myEventTarget object (that is build as a subclass of EventTarget named MyEventTarget), the
wait for one fetch to finish before starting the next
I have a list of data that I am sending to google cloud. My current code looks like this: This works with one team but it is timing out if sending multiple files and the files are bigger. I am sending images over and not strings. To solve this I need to POST the data one file by one, and
Is possible to use return statement inside expressions? [duplicate]
This question already has answers here: Javascript conditional return statement (Shorthand if-else statement) (2 answers) Closed 1 year ago. I am trying to learn how can i return in expressions, it might be impossible but any close solution can be helpfull Answer and is a logical operator , it checks the logic and return the bool value .you cannot use