Proposed changes

• Harden fastCallTracer (internaltx_tracer.go)
  • Use abi.UnpackRevert() to parse revert output.
• Harden callTracer (call_tracer.js)
  • Try-catch bigInt()
• Harden revertTracer (revert_tracer.js)
  • Try-catch bigInt()
• Update tracers test code
  • Respect the chainConfig in the testdata json
  • New helper scripts to generate testdata json
• Add testdata related to this fix and previous fixes (#1527, #1549)

Types of changes

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• Bugfix
• New feature or enhancement
• Others

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code.

• I have read the CONTRIBUTING GUIDELINES doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes ($ make test)
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules

Related issues

Further comments