Getting exported members through Typescript Compiler API can be achieved by following these steps:

I am currently working on a project hosted at https://github.com/GooGee/Code-Builder

This particular file is being loaded by the Typescript Compiler API:


import * as fs from 'fs'

Below is a snippet of my code:


function getExportList(node: ts.Identifier, checker: ts.TypeChecker) {
    const symbol = checker.getSymbolAtLocation(node)
    return checker.getExportsOfModule(symbol)
}

I am attempting to retrieve exported members of the module fs.

I am aware that the symbol is not a ts.ModuleSymbol, which means it will not work as intended.

What steps should I take next?

typescripttypescript-compiler-api

Answer №1

To obtain the aliased symbol from the local fs symbol in your possession, follow these steps:

const localFsSymbol = typeChecker.getSymbolAtLocation(node)!; // remember to handle cases where it is undefined
const fsSymbol = typeChecker.getAliasedSymbol(localFsSymbol);
const moduleExports = typeChecker.getExportsOfModule(fsSymbol);

// The output will be an array of exported names like ["rename", "renameSync", "truncate", ...etc...]
console.log(moduleExports.map(s => s.name));

If this method does not yield results, check for any diagnostics present in the program:

const diagnostics = ts.getPreEmitDiagnostics(program);
console.log(diagnostics);

Answer №2

Just Name That Function

this.fs.getExportList(userIdentifier, userTypeChecker)

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Tips on displaying the entire text when hovering over it

I'm facing an issue with a select element that retrieves options from an API. The problem is that some options are too large for the text box and get cut off, making them hard to read for users. <div class="form-group my-4"> <lab ...

htmlangulartypescriptfor-loopmouseover

Creating detailed documentation comments for TypeScript within Visual Studio

When using C# with ReSharper and StyleCop, I am able to automatically generate basic documentation comments for methods. This includes sections such as: /// <summary> /// The login. /// </summary> /// <param name="returnUrl" ...

visual-studiotypescript

Combining tuples with their corresponding data types

Trying to define a new type: type Union = [1, "one"] | [1, "first"] | [2, "two"] type GetTuple<T, U> = Extract<T, [U, ...unknown[]]>; type ObjectFromUnion<T extends Union[0] = Union[0]> = { number: T, word: ?? } Looking to utiliz ...

typescripttypescript-generics

Explore RxJs DistinctUntilChanged for Deep Object Comparison

I have a scenario where I need to avoid redundant computations if the subscription emits the same object. this.stateObject$ .pipe(distinctUntilChanged((obj1, obj2) => JSON.stringify({ obj: obj1 }) === JSON.stringify({ obj: obj2 }))) .subscribe(obj =& ...

javascriptangulartypescriptrxjs

Fetching Unicode block specials using axios in getStaticProps with Next.js

Click here to view the code and data results My attempt using the fetch method was successful, but I encountered issues when trying to use 'axios' ...

javascriptnode.jstypescriptfunctionnext.js

Currently, I am attempting to implement password strength validation using Angular

Looking for a way to implement password strength validation in Angular? You may encounter an error message like this: NullInjectorError: No provider for password strength! in the passwordstrength.ts file HTML <div class="validation_errors t ...

htmlangulartypescriptangular-reactive-forms

Converting the 'require' call to an import may be a more efficient method when importing package.json in a typescript file

In my current project, I am creating a class where I am directly accessing the package version number like this: const pkg = require('../package.json') export class MyClass() { constructor() { // Set the base version from package.jso ...

javascripttypescript

Creating a sidebar in Jupyter Lab for enhanced development features

Hi there! Recently, I've been working on putting together a custom sidebar. During my research, I stumbled upon the code snippet below which supposedly helps in creating a simple sidebar. Unfortunately, I am facing some issues with it and would greatl ...

typescriptjupyterjupyter-lab

Tips for binding to a single input box within an ngFor loop

Can anyone lend a hand with some code? I'm working on a straightforward table using ngFor, but I'm facing an issue with input binding. The problem is that all the input fields generated by ngFor display the same value when typing. How can I preve ...

javascriptangulartypescriptionic-framework

The data type 'string[]' cannot be assigned to the data type 'listData[]'

I'm currently developing a flexible component that allows the list view to be utilized by different components. However, the challenge arises from the fact that each component has a different data format. In my project, I'm unable to use type any ...

javascriptangulartypescript

Adding a new value to a string variable using TypeScript

Just starting out with Angular and I'm looking to capture user input from a text box with each keystroke and add it to a string variable like in Java. In my text box, I have the following setup for capturing key events: <input type="text" ...

angulartypescript

Expanding the Warnings of React.Component

When I create a new class by extending React.Component in the following manner: export default class App extends React.Component<any, any > { constructor (props: React.ReactPropTypes) { super(props); } // other code } I encountere ...

reactjstypescript

What could be causing axios to not function properly when used with async/await in this particular scenario

I need to update the DoorState when a button is clicked. After sending a request to the API to change the DoorState, I then call another API to check the status of the robot. Even though the DoorState has been successfully changed, it seems that the chan ...

javascriptreactjstypescriptnext.js

How can I make TypeScript mimic the ability of JavaScript object wrappers to determine whether a primitive value has a particular "property"?

When using XMLValidator, the return value of .validate function can be either true or ValidationError, but this may not be entirely accurate (please refer to my update). The ValidationError object includes an err property. validate( xmlData: string, opti ...

javascripttypescriptprimitive

Sorting elements in an array based on an 'in' condition in TypeScript

I am currently working with an arrayList that contains employee information such as employeename, grade, and designation. In my view, I have a multiselect component that returns an array of grades like [1,2,3] once we select grade1, grade2, grade3 from the ...

javascriptangulartypescript

Error encountered in TypeScript's Map class

When working with TypeScript, I keep encountering an error message that reads "cannot find name Map." var myMap = new Map(); var keyString = "a string", keyObj = {}, keyFunc = function () {}; // assigning values to keys myMap.set(keyString, "val ...

javascripttypescript

Recursive types in TypeScript allow for the definition of types that

Is there a way to implement the function below without utilizing any? Playground type MyType = { name: string, age: number, score: { prime: number, }, prize: { first: { discount: number } } } export const trim = ( myObj: ...

typescript

Trouble with displaying cell content in ag-grid within an Angular application

I have implemented ag-grid in my Angular project and I am trying to redirect to a link when a specific cell is clicked. Currently, I have a new value coming from an API which is nested inside an object in an array. For example, the object is dto-> dat ...

angulartypescriptangular9ag-grid-angular

Is there a way to package extra files along with `NodejsFunction` in Node.js?

I am looking to add another HTML file to the source code, like shown below. https://i.sstatic.net/OyxDM.png Here is my current code: const mailerFunction = new aws_lambda_nodejs.NodejsFunction(this, 'ApiNotificationHandler', { runtime: lambd ...

node.jstypescriptaws-lambdaaws-cdk

Is there a method for verifying the application signature in Ionic?

For the past 2 days, I've been on a quest to find information about app certificate validation libraries/functions in Ionic. After discovering SignatureCheck.java for Android (link: enter link description here), I wonder if there is a similar solution ...

javascripttypescriptionic-frameworkionic3cordova-plugins