JuliusBrussee/caveman · error

invalid JSON number exponent

Error message

invalid JSON number exponent

What it means

Error "invalid JSON number exponent" thrown in JuliusBrussee/caveman.

Source

Thrown at shared/platform/proposalrun/proposalrun.go:272

			return "", fmt.Errorf("JSON number exceeds PostgreSQL fraction-digit limit")
		}
		out = "0." + strings.Repeat("0", scale-len(digits)) + digits
	default:
		if scale > maxJSONBNumericFractionDigits || len(digits)-scale > maxJSONBNumericIntegerDigits {
			return "", fmt.Errorf("JSON number exceeds PostgreSQL numeric limits")
		}
		point := len(digits) - scale
		out = digits[:point] + "." + digits[point:]
	}
	if negative {
		return "-" + out, nil
	}
	return out, nil
}

func parseJSONExponent(raw string) (int, error) {
	if len(raw) == 0 {
		return 0, fmt.Errorf("invalid JSON number exponent")
	}
	negative := false
	if raw[0] == '+' || raw[0] == '-' {
		negative = raw[0] == '-'
		raw = raw[1:]
	}
	if len(raw) == 0 {
		return 0, fmt.Errorf("invalid JSON number exponent")
	}
	value := 0
	for i := 0; i < len(raw); i++ {
		if raw[i] < '0' || raw[i] > '9' {
			return 0, fmt.Errorf("invalid JSON number exponent")
		}
		digit := int(raw[i] - '0')
		if value > (maxJSONBNumberExponent-digit)/10 {
			return 0, fmt.Errorf("JSON number exponent exceeds supported range")
		}

View on GitHub (pinned to 27d5a3981a)

Solutions

1. Fix the JSON number exponent.

When it happens

Trigger: Thrown at shared/platform/proposalrun/proposalrun.go:272 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

AI-assisted analysis of JuliusBrussee/caveman@27d5a3981a (2026-08-15). Data as JSON: /api/errors/6d802f91f608d406. Report an issue: GitHub.