When input files are specified on the command line, tsconfig.json files are ignored. Often this helps whenever there is no backend yet and you need to implement your React frontend against some kind of realistic data. By invoking tsc with no input files and a -project (or just -p) command line option that specifies the path of a directory containing a tsconfig.json file, or a path to a valid. Part 1: JavaScript Fake API with Mock Data In this tutorial we will implement use JavaScript fake API with mock data from a pseudo backend to create our frontend application with React.By invoking tsc with no input files, in which case the compiler searches for the tsconfig.json file starting in the current directory and continuing up the parent directory chain. I have a node module which exports a few classes, one of which is Client, which I use to create a client (having a few APIs as methods). ![]() This way, any mocks can be injected in the tested unit. I have adopted a different approach: instead of mocking actual imports, I use constructor injection. An editor that supports TypeScript can deliver quick fixes to automatically fix errors, refactorings to easily re-organize code, and useful navigation features for jumping to definitions of a variable, or finding all references to a given variable. In typescript you can do it like so, make a file call it whatever you want then make an export const or var. JavaScript projects can use a jsconfig.json file instead, which acts almost the same but has some JavaScript-related compiler flags enabled by default.Ī project is compiled in one of the following ways: Using tsconfig.json or jsconfig.json 1 Answer Sorted by: 2 Mocking can be a pain with ES6 modules and TypeScript has the same issue. TypeScript takes tooling seriously, and that goes beyond completions and errors as you type. The tsconfig.json file specifies the root files and the compiler options required to compile the project. ![]() I then import both the mock data and the type definitions into my main component. Since I'm using TypeScript I also have a separate file with the types for each element of the mock data. ![]() The presence of a tsconfig.json file in a directory indicates that the directory is the root of a TypeScript project. I have a React/TypeScript component I'm building where I import a mock data object to work with.
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