deepseek-ai/deepseek-harness · error · Error

typert-loader: ${pkgName} invocation "${id}" sourceLocation.

Error message

typert-loader: ${pkgName} invocation "${id}" sourceLocation.${key} must be a positive integer

What it means

Error "typert-loader: ${pkgName} invocation "${id}" sourceLocation.${key} must be a positive integer" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/typert/loader/src/index.ts:258

    requireString(pkgName, scope, 'context', `invocation "${id}" scope`)
    requireString(pkgName, scope, 'wire', `invocation "${id}" scope`)
    const parameter = parameters.get(scope.wire as string)
    if (lookupCount !== 1 || parameter?.source !== 'lookup' || parameter.lookup !== scope.context) {
      throw new Error(
        `typert-loader: ${pkgName} invocation "${id}" scope wire "${scope.wire as string}" must select its only lookup parameter`,
      )
    }
  }
  if (receiver.kind === 'context' && wires.has(receiver.wire as string)) {
    throw new Error(`typert-loader: ${pkgName} invocation "${id}" repeats Context wire field "${receiver.wire as string}"`)
  }
  requireStrictCodec(pkgName, invocation.result, `invocation "${id}" result codec`)
  if (invocation.sourceLocation !== undefined) {
    const location = requireObject(pkgName, invocation.sourceLocation, `invocation "${id}" sourceLocation`)
    requireString(pkgName, location, 'file', `invocation "${id}" sourceLocation`)
    for (const key of ['line', 'column'] as const) {
      if (!Number.isInteger(location[key]) || (location[key] as number) < 1) {
        throw new Error(`typert-loader: ${pkgName} invocation "${id}" sourceLocation.${key} must be a positive integer`)
      }
    }
  }
}

function requireStrictCodec(pkgName: string, value: unknown, subject: string): void {
  const codec = requireObject(pkgName, value, subject)
  if (codec.mode !== 'strict') {
    throw new Error(`typert-loader: ${pkgName} ${subject} must use a strict codec`)
  }
  requireString(pkgName, codec, 'typeSymbol', subject)
  if (typeof codec.schema !== 'object'
    || codec.schema === null
    || !('_zod' in codec.schema)
    || typeof (codec.schema as { parse?: unknown }).parse !== 'function') {
    throw new Error(`typert-loader: ${pkgName} ${subject} is not backed by a zod v4 schema`)
  }
}

View on GitHub (pinned to b150a551b8)

Solutions

1. Set sourceLocation fields to positive integers in the invocation manifest.

When it happens

Trigger: Thrown at packages/typert/loader/src/index.ts:258 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/05944c3589fc2d3f. Report an issue: GitHub.