# All files / src errors.js

80% Statements 32/40
62.5% Branches 5/8
75% Functions 9/12
80% Lines 32/40

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     /* @flow */
    export const ERROR_CODES = {
      MISSING_PARAMETER: 'missing_parameter',
      REMOTE_SERVICE_ERROR: 'remote_service_error',
      INVALID_STATE: 'invalid_state',
      NO_SESSION_DATA: 'no_session_data',
      UNKNOWN: 'unknown'
    }

    Object.freeze(ERROR_CODES)

    type ErrorType = {
      code: string,
      parameter?: string,
      message: string
    }

    export class BlockstackError extends Error {
      message: string

      code: string

      parameter: ?string

      constructor(error: ErrorType) {
        super(error.message)
        this.message = error.message
        this.code = error.code
        this.parameter = error.parameter ? error.parameter : null
      }

      toString() {
        return `${super.toString()}
        code: ${this.code} param: ${this.parameter ? this.parameter : 'n/a'}`
      }
    }

    export class InvalidParameterError extends BlockstackError {
      constructor(parameter: string, message: string = '') {
        super({ code: 'missing_parameter', message, parameter: '' })
        this.name = 'MissingParametersError'
      }
    }

    export class MissingParameterError extends BlockstackError {
      constructor(parameter: string, message: string = '') {
        super({ code: ERROR_CODES.MISSING_PARAMETER, message, parameter })
        this.name = 'MissingParametersError'
      }
    }

    export class RemoteServiceError extends BlockstackError {
      response: Response

      constructor(response: Response, message: string = '') {
        super({ code: ERROR_CODES.REMOTE_SERVICE_ERROR, message })
        this.response = response
      }
    }

    export class InvalidDIDError extends BlockstackError {
      constructor(message: string = '') {
        super({ code: 'invalid_did_error', message })
        this.name = 'InvalidDIDError'
      }
    }

    export class NotEnoughFundsError extends BlockstackError {
      leftToFund: number

      constructor(leftToFund: number) {
        const message = `Not enough UTXOs to fund. Left to fund: ${leftToFund}`
        super({ code: 'not_enough_error', message })
        this.leftToFund = leftToFund
        this.name = 'NotEnoughFundsError'
        this.message = message
      }
    }

    export class InvalidAmountError extends BlockstackError {
      fees: number

      specifiedAmount: number

      constructor(fees: number, specifiedAmount: number) {
        const message = `Not enough coin to fund fees transaction fees. Fees would be ${fees},`
              + ` specified spend is  ${specifiedAmount}`
        super({ code: 'invalid_amount_error', message })
        this.specifiedAmount = specifiedAmount
        this.fees = fees
        this.name = 'InvalidAmountError'
        this.message = message
      }
    }

    export class LoginFailedError extends BlockstackError {
      constructor(reason: string) {
        const message = `Failed to login: ${reason}`
        super({ code: 'login_failed', message })
        this.message = message
        this.name = 'LoginFailedError'
      }
    }

    export class SignatureVerificationError extends BlockstackError {
      constructor(reason: string) {
        const message = `Failed to verify signature: ${reason}`
        super({ code: 'signature_verification_failure', message })
        this.message = message
        this.name = 'SignatureVerificationError'
      }
    }

    export class InvalidStateError extends BlockstackError {
      constructor(message: string) {
        super({ code: ERROR_CODES.INVALID_STATE, message })
        this.message = message
        this.name = 'InvalidStateError'
      }
    }

    export class NoSessionDataError extends BlockstackError {
      constructor(message: string) {
        super({ code: ERROR_CODES.INVALID_STATE, message })
        this.message = message
        this.name = 'NoSessionDataError'
      }
    }