tsyringe | Lightweight dependency injection container | Dependency Injection library
kandi X-RAY | tsyringe Summary
kandi X-RAY | tsyringe Summary
A lightweight dependency injection container for TypeScript/JavaScript for constructor injection.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of tsyringe
tsyringe Key Features
tsyringe Examples and Code Snippets
Community Discussions
Trending Discussions on tsyringe
QUESTION
I am clearly misunderstanding how TSyringe is supposed to resolve classes with dependencies.
I created a minimal repro. In my index.tsx, I do as they indicate in the docs and import reflect-metadata
. This example works if I inject a singleton
class with no dependencies:
ANSWER
Answered 2022-Feb-08 at 18:36OK so I figured this out.
To keep the typescript metadata and allow reflect-metadata to do its thing, we need to add babel-plugin-transform-typescript-metadata
to the project.
However, in order to customize create-react-app, you need the craco
library. There are several out there, but craco is the only one I could that supports CRA 4.x. You cannot be on the latest (CRA 5.0) as none of these libs support it yet.
So:
1 - Install Craco and set it up.
2 - Install babel-plugin-transform-typescript-metadata
as a dev dependency
3 - Add a craco.config.js
file to your project to load this plugin:
QUESTION
I am quite new with typescript/express and I have a problem with importing a middleware.
Indeed, I have a module auth.ts
which will contain in a near future several middlewares. Here is its current implementation (with only one middleware for keeping simple).
ANSWER
Answered 2021-Dec-08 at 08:35In auth.ts, export is going wrong i feel. Please do the following changes and try
QUESTION
I'm building a TypeScript Node.js/Express application and started implementing some integration tests with Jest and Supertest, but even after setting up a TypeORM connection successfully my tests fail saying that a connection was not found.
This is what I currently have in my test file:
...ANSWER
Answered 2021-Nov-12 at 22:18What's happening here is I have two connections on my 'ormconfig.js'
file:
QUESTION
I have simple logger .ts file .I am try to do unit test on that .If some one help me to fix my unit test.
logging.service.ts
...ANSWER
Answered 2021-Jun-29 at 04:16You should be using callThrough
instead of stub
. When you stub
it won't call the actual implementation and basically just ignore the call. Check out Method stubs for more info.
When you use callThrough
it would call the actual implementation thus adding coverage. So you can use something like:
QUESTION
I am having trouble implementing singleton, because class marked as @singleton() is being recreated on every resolve().
Here is the example
...ANSWER
Answered 2021-Mar-31 at 08:19Singleton should be registered as follows
QUESTION
I am currently having trouble with my React TypeScript project.
I created my project with npx create-react-app my-app --template typescript
.
I recently added tsyringe for dependency injection and was trying to implement it for an apiService. After following the readme(https://github.com/microsoft/tsyringe#injecting-primitive-values-named-injection) for adding primitive values I have hit a block. I already add experimentalDecorators and emitDecoratorMetadata to my tsconfig.json
file with no success.
The error actual error I am encountering is:
...ANSWER
Answered 2021-May-19 at 13:12React-Scripts manages many of the configs related to the project. For many cases, this is fine and actually a nice feature. However, because React-Scripts uses Babel for it's development environment and does not expose the config.
You have to run npm run eject
to expose the configurations.
Please note, this is a one-way operation and can not be undone. Personally, I prefer more control with my configuration.
After this you can edit the webpack.config.js in the newly created config folder.
Find the section related to the babel-loader in the dev-environment and add 'babel-plugin-transform-typescript-metadata'
to the plugins array.
QUESTION
I want to pass "Interfaces" to a function. Not a specific interface, but any interfaces.
As described here, for Class, I can handle it as a type.
...ANSWER
Answered 2021-Apr-22 at 04:33Absolutely not.
Don't confuse types (interfaces, types, enums, etc) with values (boolean, string, object, array, function, etc).
Values can be arguments and each value has a type but an argument cannot be a type.
QUESTION
I need to add a HSTS header to this file , but I am unsure of how to do it.
...ANSWER
Answered 2021-Mar-04 at 10:51In the response, you can call res.setHeader(headerName, headerValue)
to set any header, including HSTS headers. Typically you'll want to do something like:
QUESTION
I'm trying to create a custom decorator for tsyringe to inject through properties.
My code:
...ANSWER
Answered 2020-Dec-22 at 07:17After a hour of sleep and a lot of coffee with some research.... I found the solution!
I was trying to manipulate the getter instead of setting the property value. That resulted to the following code:
QUESTION
I am trying to build and example to understand how the DI framework/library works, but i am encountering some problems.
I have this interface with two possible implementations:
...ANSWER
Answered 2020-Oct-13 at 11:59Since OperationSub
isn’t used anywhere, it cannot affect injected Operation
value.
Calculators with different dependency sets should be represented with multiple containers. Summing calculator can be considered a default implementation and use root container, or both implementations can be represented by children containers while root container remains abstract.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install tsyringe
reflect-metadata
core-js (core-js/es7/reflect)
reflection
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