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error.ts
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import { BSON_MAJOR_VERSION } from './constants';
/**
* @public
* @category Error
*
* `BSONError` objects are thrown when BSON encounters an error.
*
* This is the parent class for all the other errors thrown by this library.
*/
export class BSONError extends Error {
/**
* @internal
* The underlying algorithm for isBSONError may change to improve how strict it is
* about determining if an input is a BSONError. But it must remain backwards compatible
* with previous minors & patches of the current major version.
*/
protected get bsonError(): true {
return true;
}
override get name(): string {
return 'BSONError';
}
constructor(message: string, options?: { cause?: unknown }) {
super(message, options);
}
/**
* @public
*
* All errors thrown from the BSON library inherit from `BSONError`.
* This method can assist with determining if an error originates from the BSON library
* even if it does not pass an `instanceof` check against this class' constructor.
*
* @param value - any javascript value that needs type checking
*/
public static isBSONError(value: unknown): value is BSONError {
return (
value != null &&
typeof value === 'object' &&
'bsonError' in value &&
value.bsonError === true &&
// Do not access the following properties, just check existence
'name' in value &&
'message' in value &&
'stack' in value
);
}
}
/**
* @public
* @category Error
*/
export class BSONVersionError extends BSONError {
get name(): 'BSONVersionError' {
return 'BSONVersionError';
}
constructor() {
super(`Unsupported BSON version, bson types must be from bson ${BSON_MAJOR_VERSION}.x.x`);
}
}
/**
* @public
* @category Error
*
* An error generated when BSON functions encounter an unexpected input
* or reaches an unexpected/invalid internal state
*
*/
export class BSONRuntimeError extends BSONError {
get name(): 'BSONRuntimeError' {
return 'BSONRuntimeError';
}
constructor(message: string) {
super(message);
}
}
/**
* @public
* @category Error
*
* @experimental
*
* An error generated when BSON bytes are invalid.
* Reports the offset the parser was able to reach before encountering the error.
*/
export class BSONOffsetError extends BSONError {
public get name(): 'BSONOffsetError' {
return 'BSONOffsetError';
}
public offset: number;
constructor(message: string, offset: number, options?: { cause?: unknown }) {
super(`${message}. offset: ${offset}`, options);
this.offset = offset;
}
}