以下の詳しいガイドと説明用の事例は英語です。例に含まれる業務データは架空のものです。
Where TypeScript fits
An application where changes to shared data contracts are difficult to track.
When to choose another approach
Types are erased at runtime. User, API and stored inputs still need validation.
Worked example and evidence
Fictional order app: rename a delivery field in a maintained contract, update affected callers and reject an invalid date from a vendor.
What you need to supply
Source, compiler configuration, API contracts, dependency types and risky change areas.
What acceptance should demonstrate
The build catches incompatible callers and runtime validation rejects agreed invalid payloads.
Running costs and responsibilities
Maintain contracts, compiler settings and dependency types as the system changes.
Technical scope to confirm
Static checking does not replace authorization, runtime validation or behaviour review.
A proposal should identify the systems and data, direction of sync, access feasibility, failure handling, named owners and included deliverables. Listing this technology does not imply a prebuilt connector, vendor partnership or included feature.
Is rewriting all JavaScript necessary?
No blanket rewrite is required. Choose a bounded module or interface and confirm the value of incremental adoption.