a full stack enthusiast interested in Javascript / Typescript / Kotlin / Python / React / React Native / (Android & iOS) native / Cloud

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I think I have a talent to make such a verbose title… xD

Anyway, error handling is tedious or hard, just like naming your blog. But you can’t miss it, because it makes your code robust. AWS lambda is a great way to write your code, and its simple nature enables us to do something very interesting, and make your code clean, I previously looked a lot about best practice of error handling in lambda, but either they mentions other AWS services integration or just lambda-API gateway configuration. Today, let’s talk about the code. How to make this part clean. Even more, we will use Typescript.

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Serverless framework is a fantastic framework to simplified your serverless management. Most of the time, we have some configurations which are different among different environments. Let’s say how could we achieve this with Serverless framework. Including manage tests in Jest.

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I have a side project using dokku, it works well. But then I want to dump the production data to local in order to test some cases. I thought it should be as simple as dump and restore, but I was wrong. It took me a while, I think write it down might help someone else or future me.

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Dokku is good, and I wrote a blog for whole setup of Dokku + Node + React + MongoDB. This blog, we will address the issue where if you use the default buildpack for building, it will download Node and NPM everytime, which will make it very long in some circumstance, in this blog, we will Dockerfile to replace it, make it much more faster, because we will multi-stage build with its cache mechanism.

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The hard part of this is, the official Google sign-in is using a script tag in your HTML and initialize it using the traditional in-browser vanilla JavaScript, which is not happening in React. And make it a little bit harder to make the two works together.

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So I just encountered a problem where I want to make a better type checking in a props of a React component. It’s about one prop takes an array of certain type X, and in another prop: callback, this type X needs to be the parameter of the callback. Let’s see how to do that in TypeScript.

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I’ve heard mobx-state-tree for a while. Today I looked into it, and found it’s pretty lovely. Kind of the fat model pattern. Where it could make the code much more cleaner and far more less boilerplate compare to redux. Today, let’s see how to make nested level in mobx-state-tree.

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