bn.js | BigNum in pure javascript | Frontend Utils library
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kandi X-RAY | bn.js Summary
BigNum in pure javascript.
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QUESTION
Hello my fellow developers!
So I've been working on this app for a while now. I like to be up to date with the frameworks I use, so I regularly update when the frameworks release a new version. i.e. Angular 9 > 10. Angular 10 > 11.
So I just recently updated to Angular 11 and updated my nestjs and nx. And now when I try to serve my frontend app, Ivy seems to complain a lot.. but a.. lot... about modules that are not used in the frontend app.
...ANSWER
Answered 2021-Mar-28 at 15:10After a day's review of the project, I was:
importing a class from the middleware that was using a library of the backend.
using a library from the backend in the frontend
To fix the issues also complies with best-practices.
I have split the class in the middleware into two classes: one for the frontend, one for the backend. I have refactored the code so that the backend library was not necessary on the frontend. I ended up just fixing two files. And all the errors dissapeared.
So if you encounter something similar, double check whether or not you use some backend libraries/classes in your frontend.
QUESTION
So I was making a node app that had a conditional statement in the class constructor, if this then variable is equal to that, else variable equal to that. However, when I initialize that variable I want to change depending on the boolean statement with "this" syntax it gives me an error in the console. Why does this happen? And how can I initialize that variable if I can't initialize it more than once with "this" syntax in JS?
Update:
I was given How does 'this' work in JavaScript? to see if this helps, and it has nothing to do with what I asked. To be more specific, it's like why can I do this var test; if(true){var test = 1}else{var test = 0}
and not this if(true){this.test = 1}else{this.test = 0}
and be able to use the variable all throughout my app.
code:
...ANSWER
Answered 2021-Feb-17 at 01:47The first problem is your conditional:
QUESTION
I have an application that runs as AWS Lambda function using Cognito authentication. It all works fine but now I am attempting to optimise the bundle size to reduce cold start times.
The process of verifying and decoding the JWT involves:
- Fetch JWK from internal AWS endpoint
- Call jwkToPem from jwk-to-pem module
- Verify and decode JWT using jsonwebtoken module
When I look at the node_modules
in my archive, the largest packages are all related to the steps above:
ANSWER
Answered 2021-Feb-05 at 09:46Given that the "Fetch JWK from internal AWS endpoint" step is fetching from a JSON Web Key Set, the jose
version 3.x module can do everything for you.
The disk size is bigger, but that's because it's a universal module and bundles runtime also for the web, in both esm and cjs flavours, but don't fret - in your runtime it requires only the node runtime files and has 0 dependencies. And you can use rollup to tree-shake all of the weight you're not using (other submodules and runtime files).
QUESTION
I have created a project on Strapi (CMS) which is linked to MongoDB but I have some trouble to deploy it on Heroku.
I am trying to deploy a project I created on Heroku and I have some trouble to do it... Anyone has any idea of what is going on ? It seems to do with sharp 'darwin-x64' but I really don't know what it is.
Build Log
...ANSWER
Answered 2020-Nov-08 at 18:14It looks like there is a mismatch between the environments you use. Try the following:
- Remove sharp completely from your app.
QUESTION
In our project Webpack-bundle-analyzer
plugin says that the bundle uses specific module (js file) 6 times.
What is the best way to make project as it used only one ( instead of multiple)? I know they might be from dependencies' depencendies, but how such problem should be solved?
I am OK with checking my APP manually for possible code-breaks, but the goal is surely to use one bn.js
. Our package.json
doesnt contain it in any dependencies directly.
ANSWER
Answered 2020-Oct-29 at 09:13This situation happens probably because your app (or it's dependencies) are requiring a different version of the same lib.
It is not recommended to "force" the same version by hacking some Webpack's config (it is possible). There is a meaning to semantic versioning, if the lib bumped a major version, this means that it contains breaking changes.
A better approach will be to manually align the version of the lib (or its consumer).
You can run yarn why lib-name
or npm ls lib-name
which will print you a list of dependencies which are consuming the lib and at which version, this will help you to upgrade the dependencies in order to align the versions.
If you still want to force, you can check these solutions https://github.com/webpack/webpack/issues/6505
- Using
yarn resolutions
to install only one version. - Using webpack alias, to alias the
lib-name
to a specific path (each different version is installed in the consumernode_modules
folder) - Force webpack to resolve only from the app
node_modules
by
QUESTION
I've implemented the jquery strengthify library (https://github.com/MorrisJobke/strengthify) to validate password strength along with a random password generator. The issue I'm having is that when a user typed a weak password and then decided to generate one, the strength checker doesn't re-evaluate the input and keeps the old validation failure.
I need help to reset the validation failure when a password was generated.
See below for code
...ANSWER
Answered 2020-Aug-24 at 09:55I would try to trigger change
:
QUESTION
I am trying to deploy a Smart Contract with truffle 5.1.19 as follows:
...ANSWER
Answered 2020-Jul-09 at 14:39If you are working with quorum like it is my case. On truffle-config.js, you have to write type:"quorum" and it solves the problem.
QUESTION
I am actually learning smart contract programming on ethereum and I work with truffle. Right now I am making this tutorial here: https://truffleframework.com/tutorials/building-dapps-for-quorum-private-enterprise-blockchains
Where you learn how to create a dapp with quorum. But now I have a problem.
I did everything exactly as described, but when I do:
...ANSWER
Answered 2019-Feb-08 at 15:08The proxy is not enough, because web3.js can get block in subscribtion via ws
Also in quorum getting block by number is broken, it accept only hex, however web3.js assume hex as blockhash
Here is my solution
QUESTION
I'm a super excited novice, stuck on this; can't find this anywhere, please help:
How to get the var dotContainer
to be all of the ids from the JSON DB, as to make all the matching HTML id elements invisible using the CSS “dot-hide” property (appose to just this one “n788” id specified with getElementById).
So the JSON database which updates dynamically with new id values (like n790 or n786) will asynchronously hide the matching HTML id element dots with the CSS “dot-hide".
JavaScript
...ANSWER
Answered 2020-Apr-02 at 16:24You have to add and remove css.
Sample:
QUESTION
Does anyone have experience publishing a .NET/Angular project to Netlify? I'm using the Angular Microsoft.AspNetCore.SpaTemplates template. On Netlify, I'm getting a non-zero exit code that's preventing me from publishing. Here is my output:
...ANSWER
Answered 2019-Jan-30 at 21:21Disclaimer: I work for Netlify
As we mentioned to you in your helpdesk ticket on this same topic, our deploy environment is very naked - you have to:
- specify dependencies that we can automatically install - npm/yarn deps, bower deps, gems and python packages.
- install other dependencies yourself. the 'dotnet' program will be one of this type. We don't have it in our install environment, so you need to somehow import a copy of it into the environment. Seems like you can download the entire SDK here: https://www.microsoft.com/net/download/linux and then you need to import ONLY what is necessary for your build - it will take a very long time to build your site if we have to download the entire SDK, so see what you can trim down to get 'dotnet' to run.
For the purposes of #2, you'll probably need to test things in our build environment. How to do that, and details you'll need about the build environment such as OS type so you can download the right version of the SDK are described in this article:
https://www.netlify.com/blog/2016/10/18/how-our-build-bots-build-sites/
This will take some work on your part. It will not be trivial. It is not something we can help with in more detail than that for free customers unless you come with specific questions and examples.
To address some thoughts in the comments:
- build.sh is indeed our build script
- 9:46:52 AM: /opt/build/build.sh: line 427: dotnet: command not found means that literally there is no dotnet command available to run - not that some config file is missing.
- we only try to run it once since you have set your command to use
&&
to chain several commands - one fails, the whole chain fails, and we don't need to run it two more times once the first failure occurs :)
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