Extreme Number Literals

Numbers with extreme exponents fail fast instead of stalling

A number literal such as 9E9999999 in inputs, locals, or a dependency block's mock_outputs used to cost over a minute of CPU on a single unit. Written out in decimal that number is ten million digits long, and terragrunt render --format=json produced every digit before failing with a ten megabyte error message.

Terragrunt now rejects numbers larger than 1e4096, and non-zero numbers smaller than 1e-4096, before it tries to write them out, and names the attribute holding the value:

count: number is outside the supported range of 1e-4096 to 1e4096

Numbers inside that range are unaffected.