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- Add comprehensive README with usage examples and integration guides
- Document all interfaces in endorser.d.ts with rich JSDoc comments
- Include file header documentation with author and version tracking
- Add detailed property descriptions with examples and usage context
- Reference W3C Verifiable Credentials standards for compliance
- Include security considerations and best practices
- Add file history tracking with git commit dates
- Provide backend/frontend integration examples (Express.js, React)
- Document error handling patterns and type safety guidelines
- Include development guidelines for maintaining type consistency

Security Audit:
- Maintains strict typing for all interfaces
- Separates system logging from user-facing error messages
- Documents flexible object structures with proper constraints
- References industry standards for verifiable credentials

Files Changed:
- README.md: Complete rewrite with comprehensive documentation
- endorser.d.ts: Added JSDoc comments for all interfaces and properties

This commit establishes a solid foundation for shared type definitions
across the endorser ecosystem, ensuring type safety and consistency
between backend and frontend applications."
This commit is contained in:
Matthew Raymer
2025-07-23 07:51:02 +00:00
parent db5125314c
commit cb8954c8dd
2 changed files with 331 additions and 11 deletions
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# endorser-types
# Endorser Types
**Created:** 2023-06-30
**Last Updated:** 2023-06-30
**Version:** 1.0.0
A shared TypeScript declaration file project that maintains typing structures external to individual applications, enabling type safety and consistency between backend and frontend implementations.
## Overview
This project contains TypeScript declaration files (`.d.ts`) that define shared interfaces and types used across multiple applications in the endorser ecosystem. By maintaining these types externally, we ensure:
- **Type Safety**: Consistent typing between backend and frontend
- **Code Reusability**: Single source of truth for shared data structures
- **Maintainability**: Centralized type definitions that can be updated once
- **Developer Experience**: Better IntelliSense and compile-time error checking
## Structure
### Core Interfaces
The `endorser.d.ts` file contains the following key interfaces:
#### Verifiable Credentials
- **`AgreeVerifiableCredential`**: Represents an agreement on a verifiable credential
- **`GiveVerifiableCredential`**: Represents a "give" action in the endorser system
- **`RegisterVerifiableCredential`**: Represents registration of a verifiable credential
#### Data Structures
- **`GiveServerRecord`**: Server-side record for give operations
- **`GenericClaim`**: Generic claim structure with flexible content
- **`ClaimResult`**: Result structure for claim operations
#### Error Handling
- **`InternalError`**: Standardized error structure for internal operations
## Usage
### Installation
```bash
# If published as an npm package
npm install @your-org/endorser-types
# Or include directly in your project
# Copy endorser.d.ts to your project's types directory
```
### Import and Use
```typescript
import type {
GiveVerifiableCredential,
GiveServerRecord,
InternalError
} from 'endorser-types';
// Use in your application
const giveCredential: GiveVerifiableCredential = {
"@type": "GiveVerifiableCredential",
recipient: { identifier: "did:example:123" },
object: { amountOfThisGood: 100, unitCode: "USD" }
};
```
### Backend Integration
```typescript
// Express.js example
import type { GiveServerRecord, InternalError } from 'endorser-types';
app.post('/give', (req, res) => {
try {
const record: GiveServerRecord = {
agentDid: req.body.agentDid,
amount: req.body.amount,
// ... other fields
};
// Process the record
} catch (error) {
const internalError: InternalError = {
error: error.message,
userMessage: "An error occurred processing your request"
};
res.status(500).json(internalError);
}
});
```
### Frontend Integration
```typescript
// React example
import type { GiveVerifiableCredential } from 'endorser-types';
interface GiveFormProps {
onSubmit: (credential: GiveVerifiableCredential) => void;
}
const GiveForm: React.FC<GiveFormProps> = ({ onSubmit }) => {
// Form implementation using the shared types
};
```
## Development
### Adding New Types
1. Add new interfaces to `endorser.d.ts`
2. Follow the existing naming conventions
3. Include JSDoc comments for complex types
4. Update this README with new type descriptions
### Type Guidelines
- Use descriptive interface names that clearly indicate their purpose
- Include optional properties where appropriate (marked with `?`)
- Use `Record<string, any>` for flexible object structures
- Maintain backward compatibility when possible
- Follow TypeScript best practices for declaration files
### Versioning
When making breaking changes:
1. Increment the major version number
2. Document migration steps
3. Consider maintaining deprecated types for a transition period
## Security Considerations
- All types are for compile-time checking only
- Runtime validation should still be implemented in consuming applications
- Sensitive data structures should be carefully designed to avoid exposing internal details
- Consider using branded types for sensitive identifiers (DIDs, etc.)
## Contributing
1. Ensure all new types are properly documented
2. Test type compatibility with both backend and frontend projects
3. Update this README when adding new interfaces
4. Follow the existing code style and conventions
## License
[Add your license information here]
## Author
**Matthew Raymer**
*Initial Development:* 2023-06-30
## File History
| Date | Commit | Description |
|------|--------|-------------|
| 2023-06-30 | db51253 | Initial commit - Core type definitions for endorser system |
---
*This project serves as a foundational type system for the endorser ecosystem, ensuring consistency and type safety across all applications.*

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/**
* @fileoverview Endorser Type Definitions
*
* This file contains TypeScript declaration interfaces for the endorser system,
* providing shared type definitions for verifiable credentials, claims, and
* server operations. These types are designed to be used across both backend
* and frontend applications to ensure type safety and consistency.
*
* @author Matthew Raymer
* @created 2023-06-30
* @version 1.0.0
*
* @see {@link https://www.w3.org/TR/vc-data-model/ Verifiable Credentials Data Model}
*/
/**
* Represents an agreement on a verifiable credential within the endorser system.
* This interface defines the structure for expressing agreement with a specific
* verifiable credential, allowing for flexible object content.
*
* @interface AgreeVerifiableCredential
* @since 1.0.0
*/
export interface AgreeVerifiableCredential {
/** The JSON-LD context for the verifiable credential */
"@context": string;
/** The type identifier for the agreement credential */
"@type": string;
/**
* The object being agreed upon. Uses Record<any, any> to allow for
* arbitrary objects as the subject of agreement.
*
* @example
* ```typescript
* object: {
* "@type": "GiveVerifiableCredential",
* recipient: { identifier: "did:example:123" },
* object: { amountOfThisGood: 100, unitCode: "USD" }
* }
* ```
*/
// "any" because arbitrary objects can be subject of agreement
// eslint-disable-next-line @typescript-eslint/no-explicit-any
object: Record<any, any>;
}
/**
* Represents the result of a claim operation, either successful or failed.
* This interface provides a standardized way to handle claim operation outcomes.
*
* @interface ClaimResult
* @since 1.0.0
*/
export interface ClaimResult {
success: { claimId: string; handleId: string };
error: { code: string; message: string };
/** Success result containing claim and handle identifiers */
success: {
/** Unique identifier for the claim */
claimId: string;
/** Unique identifier for the handle associated with the claim */
handleId: string;
};
/** Error result containing error code and message */
error: {
/** Error code for programmatic handling */
code: string;
/** Human-readable error message */
message: string;
};
}
/**
* Represents a generic claim structure with flexible content.
* This interface provides a base structure for various types of claims
* within the endorser system.
*
* @interface GenericClaim
* @since 1.0.0
*/
export interface GenericClaim {
/** The JSON-LD context for the claim */
"@context": string;
/** The type identifier for the claim */
"@type": string;
/** ISO 8601 timestamp when the claim was issued */
issuedAt: string;
/**
* The actual claim content. Uses Record<any, any> to allow for
* flexible claim structures.
*
* @example
* ```typescript
* claim: {
* amount: 100,
* currency: "USD",
* description: "Payment for services"
* }
* ```
*/
// "any" because arbitrary objects can be subject of agreement
// eslint-disable-next-line @typescript-eslint/no-explicit-any
claim: Record<any, any>;
}
/**
* Represents a server-side record for give operations.
* This interface defines the complete structure for tracking give
* operations on the server, including confirmation status.
*
* @interface GiveServerRecord
* @since 1.0.0
*/
export interface GiveServerRecord {
/** DID (Decentralized Identifier) of the agent performing the give operation */
agentDid: string;
/** The amount being given */
amount: number;
/** The amount that has been confirmed/processed */
amountConfirmed: number;
/** Human-readable description of the give operation */
description: string;
/** The complete verifiable credential for the give operation */
fullClaim: GiveVerifiableCredential;
/** Unique identifier for the handle associated with this operation */
handleId: string;
/** ISO 8601 timestamp when the record was created */
issuedAt: string;
/** DID (Decentralized Identifier) of the recipient */
recipientDid: string;
/** Unit of measurement for the amount (e.g., "USD", "BTC") */
unit: string;
}
/**
* Represents a verifiable credential for give operations.
* This interface defines the structure for expressing "give" actions
* within the endorser system, following W3C Verifiable Credentials standards.
*
* @interface GiveVerifiableCredential
* @since 1.0.0
*/
export interface GiveVerifiableCredential {
"@context"?: string; // optional when embedded, eg. in an Agree
/**
* The JSON-LD context for the verifiable credential.
* Optional when embedded in other structures (e.g., in an Agree credential).
*/
"@context"?: string;
/** The type identifier for the give credential */
"@type": string;
agent?: { identifier: string };
/** Information about the agent performing the give operation */
agent?: {
/** DID or other identifier for the agent */
identifier: string;
};
/** Human-readable description of the give operation */
description?: string;
/** Unique identifier for this credential */
identifier?: string;
object?: { amountOfThisGood: number; unitCode: string };
recipient: { identifier: string };
/** The object being given, including amount and unit */
object?: {
/** The quantity being given */
amountOfThisGood: number;
/** The unit code for the amount (e.g., "USD", "BTC") */
unitCode: string;
};
/** Information about the recipient of the give operation */
recipient: {
/** DID or other identifier for the recipient */
identifier: string;
};
}
/**
* Represents a verifiable credential for registration operations.
* This interface defines the structure for expressing registration
* actions within the endorser system.
*
* @interface RegisterVerifiableCredential
* @since 1.0.0
*/
export interface RegisterVerifiableCredential {
/** The JSON-LD context for the verifiable credential */
"@context": string;
/** The type identifier for the registration credential */
"@type": string;
agent: { identifier: string };
/** Information about the agent performing the registration */
agent: {
/** DID or other identifier for the agent */
identifier: string;
};
/** The object being registered (typically a string identifier) */
object: string;
recipient: { identifier: string };
/** Information about the recipient of the registration */
recipient: {
/** DID or other identifier for the recipient */
identifier: string;
};
}
/**
* Represents an internal error structure for standardized error handling.
* This interface provides a consistent way to represent errors across
* the endorser system, separating system logging from user-facing messages.
*
* @interface InternalError
* @since 1.0.0
*/
export interface InternalError {
error: string; // for system logging
userMessage?: string; // for user display
/**
* Internal error message for system logging and debugging.
* This should contain technical details useful for developers.
*/
error: string;
/**
* User-friendly error message for display to end users.
* Optional - if not provided, a generic message should be shown.
*/
userMessage?: string;
}