Synchronize AssemblyScript versions between packages

Description

Environment

• @graphprotocol/graph-cli v0.97.1, which uses assemblyscript v0.19.23
• @graphprotocol/graph-ts v0.38.1, which uses assemblyscript v0.27.31

Problem

keywords: assemblyscript, equality, string checks, string comparison, null check, ==, ===, !=, !==

In previous versions of graph-ts, we were able to perform null checks using ==. But now, in the latest versions, we are forced to use === (otherwise, we get all sorts of errors at build time).

I wouldn't have a problem with using ===, but we are also forced to use == for string comparisons.

This is a super error-prone design where the maintainers have to remember to use slightly different operators for different types.

Solution

Upgrade to AssemblyScript v0.20, in which the === operator no longer checks for strict object equality.

https://github.com/AssemblyScript/assemblyscript/issues/621

Are you aware of any blockers that must be resolved before implementing this feature? If so, which? Link to any relevant GitHub issues.

No response

Some information to help us out

• Tick this box if you plan on implementing this feature yourself.
• I have searched the issue tracker to make sure this issue is not a duplicate.

Compare the AssemblyScript dependency declarations for @graphprotocol/graph-cli and @graphprotocol/graph-ts, starting with the package metadata and build configuration for each package. Confirm the required AssemblyScript upgrade is compatible with both packages and validate that null checks and string comparisons build successfully; done means both packages use the synchronized version.