TypeScript · strict mode · From $20
Do My TypeScript Homework
TypeScript is the one assignment language where the code never runs to be wrong. Under strict mode tsc --noEmit rejects your submission at compile time, so the grade turns on satisfying the type-checker before a line executes, and on courses like CS4530 a single ESLint error zeroes the whole file. A developer who works in strict mode writes it, then proves it green on tsc and lint before you submit.
Compiled under your tsconfig · Zero any · Pay 50% after it runs
What we cover in TypeScript
The type system and the toolchain that grades it
TypeScript coursework grades the compiler output, the lint report, and the test suite, so the work has to clear all three before it earns a mark. We write against the tools your course keys on: tsc with your tsconfig.json strictness flags, Jest with ts-jest for the suite, the @typescript-eslint and Prettier gate that can zero a file, and the npm scripts the autograder actually runs.
Generics are constrained, not left open. Unions carry a literal kind discriminator so a switch can narrow them, and an exhaustive handler closes with a never default. Utility and mapped types do the advanced rubric tier: Partial, Pick, Omit, Record, Readonly. The setting students miss most is that strict: true flips on eight sub-flags at once, and strictNullChecks plus noImplicitAny are the two behind nearly every red squiggle in graded code.
TypeScript assignments we do
Four assignment shapes, start to graded
A generic, fully-typed data structure
A reusable Stack<T>, LinkedList<T>, Queue<T>, or a typed event-emitter built with generic constraints (<T extends ...>), then a Jest suite that survives mutation testing. The CS4530 week-one shape: graded on tsc --strict compiling clean, no any anywhere, and your tests catching the injected-bug set, not on a passing console log.
Type-modeling with discriminated unions
Model a domain as a tagged union with a literal kind discriminator: shapes, a JSON AST, a state machine, or a card game. Then write an exhaustive handler that narrows each case and hits a never default. Marks ride on exhaustiveness and correct narrowing, not on the output the program prints.
A typed React (TSX) feature on a real codebase
Add or fix a feature inside a large TypeScript and React app, most often the Covey.Town virtual-meeting tool that CS4530 is built on. Typed props and state, useState<T>, hooks, and the tests that go with them. Graded on type-safety, a clean lint pass against the handout ESLint config, and the public-API test contract.
A type-safe REST API in Express or NestJS
A CRUD backend with typed request and response bodies, DTO interfaces, generic repository types, and correct status codes, tested by a typed Jest and Supertest suite. The full-stack capstone pairs this typed backend with the React TSX front end as one project.
TypeScript problems we fix
Six type errors that cost real marks
Each one has a known cause and a known fix. We name the mechanism, not just the red squiggle, so the same compiler error stops coming back on the next problem set. One tell worth knowing: an ESLint error that is not a type error at all, an unused import, a stray any, a leftover console.log, still zeroes the autograder on courses like CS4530 even when tsc compiles clean.
Implicit any rejected by noImplicitAny
An unannotated parameter or return value, so tsc refuses it, or worse the rubric bans any and the linter zeroes the file. We annotate every parameter and return, swap any for unknown plus a narrowing guard, and install the right @types/* package so the type is real, not assumed.
Object is possibly 'undefined' under strictNullChecks
Calling .toUpperCase() on a string | undefined will not compile in strict mode. We narrow first with an if (x != null) check, reach for optional chaining ?. and the ?? default, and use a non-null assertion only where it is genuinely safe, since the lint config usually bans it.
Property 'x' does not exist on a union type
Reading a member that only lives on one branch of a union without discriminating it first. We tag the union with a literal kind, narrow it with a switch, a typeof, or an in check, or write a custom x is T type guard so the member is reachable.
Excess-property check failure on an object literal
Passing { a, b, extra } into a typed slot rejects extra, because TypeScript flags surplus properties on fresh literals. We correct the property name, widen the interface on purpose when the extra field belongs, or assign through a typed variable when the extra props are intended.
Misused as casts and @ts-ignore hiding a real bug
Casting around an error with as any or silencing it with @ts-ignore buries the bug and trips the no-explicit-any and ban-ts-comment lint rules. We model the type correctly or narrow it, and keep as for the rare case a type cannot be expressed, with a comment saying why.
Non-exhaustive union missing the never default
Add a union member, forget a switch case, and a state slips through unhandled at runtime. We add a default with const _exhaustive: never = x, so tsc fails the build the moment a case goes missing instead of letting it ship.
Larger graded projects
Do My TypeScript Assignment
An assignment here means the larger graded artifact, not the weekly type-error problem set. A Covey.Town React feature, an Express or NestJS API, or a generic data structure with a mutation-graded test suite lands as one working build with a milestone GitHub commit history behind it. The repo grows in staggered commits across the project window, the way a grader expects a multi-week Covey.Town project to come together, not as one end-of-night push.
The structure follows the convention the course enforces: .ts and .tsx extensions in the right places, type-only imports where they belong, and a tsconfig.json that matches the handout. The build runs clean on npm run build, npm run lint, and npm test, and ts-jest reports green before the work reaches you.
Specs and toolchain
TypeScript Assignment Help (Specs and Toolchain)
Some students want the toolchain handled rather than the whole project handed over. We work from your tsconfig.json: the target line (ES2020 or later), the module system (ESM or CommonJS), and the strict sub-flags that decide what counts as a passing file. Every delivery comes with a short write-up of why each generic constraint guarantees what it does and why a given branch narrows the way it does, plus two or three viva-defense answers a TA might ask.
Get Help With a TypeScript Assignment
Stuck on one part of a bigger project rather than the whole thing? Send the piece that is failing: a single Jest test that stays red, a CS4530 lint-zero you cannot trace, an Object is possibly undefined on the Covey.Town codebase. We fix that slice against the handout ESLint config, explain the narrowing, and leave the rest of your repo as yours. Gradescope reaches the grader through Canvas and caps feedback at five graded runs every 24 hours, so we ship a version that passes before you spend one of them.
Weekly type errors
TypeScript Homework Help (Weekly Type Errors)
Homework is the recurring small stuff: a narrowing exercise, a generic function that will not compile, a discriminated union that needs a never default. These need a tsc-clean solution and a fast turnaround, not a milestone repo. The six failure modes above are the ones that show up week after week, and a single compiler error often turns around inside the hour. Send the brief, get a fixed quote, get back code that passes tsc --noEmit and reads cleanly.
Get Help With TypeScript Homework
Prefer to learn it rather than hand it off? We pair on the fix instead of just dropping the answer. We walk through why value == null narrows both null and undefined in one check, why the union would not let you reach a property until you tagged it, or why the cast was hiding the real bug, so you can write the next one yourself.
// before: 0/100 on Gradescope. tsc compiled, but one no-explicit-any
// lint error zeroed the whole CS4530 file.
// cause: an "as any" cast hiding an Object is possibly undefined,
// plus a switch with no never default.
//
// after: any replaced with unknown + a x is T guard, union tagged with
// a literal kind, default: const _x: never = state. tsc --noEmit
// clean, npm run lint clean, ts-jest suite green, 96/100.
//
// "I could explain to the TA why each branch narrowed in the viva."
// - software engineering student, TypeScript 5.4, 2026How it works
From brief to a green tsc and lint
Send the brief and your tsconfig.json
Upload the spec, the rubric, your TypeScript version (4.x, or 5.3 to 5.5), and your tsconfig.json or its strict flags. Name the autograder if you know it: Gradescope via Canvas, the CS4530 handout ESLint config, a mutation-tested suite.
Get a fixed quote in 15 minutes
A developer who works in strict mode reads the spec and sends one price. No hourly meter, no surprise fees.
Pay half, code written and checked
You pay 50% upfront. The code is written, tsc --noEmit is run, the @typescript-eslint and Prettier checks are cleared, and the ts-jest suite is green before anything reaches you.
Pay the rest after it runs
Run npm run build, npm run lint, and npm test on your machine. Pay the other 50% only once they pass. Revisions stay free for 7 days.
Want the full process first? Read how it works.
Pricing
One fixed price per TypeScript assignment, from $20
A single weekly type-error fix sits at the Standard tier. A discriminated-union model or a generic data structure with a test suite moves up. A Covey.Town feature or a full-stack Express and React capstone lands at Advanced. You see the full number before you pay, you pay half to start, and there are no rush fees.
TypeScript homework help
Questions, answered
The TypeScript-specific questions students ask before they send a brief: tsconfig strictness, the no-any rubric, autograders, mutation testing, and the lint gate.
Will it compile clean under my tsconfig.json and strict mode? +
Yes. The code is written to pass tsc --noEmit against your exact strictness flags, strictNullChecks and noImplicitAny included, not against a generic loose TypeScript config that happens to compile on our machine but not on the grader.
My rubric bans any. Do you avoid it? +
Yes. Zero any by default. We use unknown plus narrowing guards instead, because courses like CS4530 zero the whole submission on a single no-explicit-any lint error, so any is never worth the points it costs.
Can you make my assignment pass the Jest and Gradescope autograder? +
Yes. Your provided suite is run with ts-jest before delivery, and the work ships only when it is green on the TypeScript version your course pins, commonly 5.3, 5.4, or 5.5.
Can you write the tests too, so they survive mutation testing? +
Yes. A Jest suite written to catch the injected-bug set the grader uses, not just to cover the happy path. CS4530 scores student tests by mutation: the autograder injects bugs into the reference solution and your suite has to detect a minimum number.
I'm stuck on a possibly-undefined or a union narrowing error. Can you fix it? +
Yes. Those are strictNullChecks and discriminated-union bugs. The fix is a narrowing guard, optional chaining, a literal kind discriminator, or a never exhaustiveness check, and we explain which one applies and why.
Can you do a typed React (TSX) feature on the Covey.Town codebase? +
Yes. Typed props and state, useState<T>, hooks, and the public-API test contract, lint-clean against the handout ESLint config that ships byte-identical to the grading config.
Can you build a type-safe Express or NestJS API? +
Yes. Typed request and response bodies, DTO interfaces, generic repository types, the correct status codes, and a typed Jest and Supertest suite to prove the routes behave.
Will it pass npm run lint without warnings? +
Yes. Clean against @typescript-eslint and Prettier: no-explicit-any, no-unused-vars, no-non-null-assertion. On courses like CS4530 lint is a hard grade gate, so it gets the same attention the types do.
Related pages
Pages students pair with TypeScript
JavaScript is the untyped base TypeScript compiles down to, the natural origin pair. Java and C++ are the other big statically-typed, generics-heavy languages students take alongside it. The programming homework help hub covers the service end to end.
Send your TypeScript brief now
Name your TypeScript version, your tsconfig strictness, and your deadline. The first reply is free, and you pay nothing until you approve the price.