[sol-compiler] AST is not present in the output when requested

[LogvinovLeon]

Expected Behavior

AST should be present in the artifacts when requested

Current Behavior

It's not there even though Solidity returns it. It does not make it's way to the artifacts file

Possible Solution

In the https://github.com/0xProject/0x-monorepo/blob/development/packages/sol-compiler/src/compiler.ts#L396
Change from:

            const { id } = compilerOutput.sources[sourceContractPath];
            allSources[sourceContractPath] = { id, content };
        }
        const usedSources = getSourcesWithDependencies(contractPath, allSources, importRemappings);

        const contractVersion: ContractVersionData = {
            compilerOutput: compiledContract,
            sourceTreeHashHex,
            sources: _.mapValues(usedSources, ({ id }) => ({ id })),

to

            const { id, ast } = compilerOutput.sources[sourceContractPath];
            allSources[sourceContractPath] = { id, ast, content };
        }
        const usedSources = getSourcesWithDependencies(contractPath, allSources, importRemappings);

        const contractVersion: ContractVersionData = {
            compilerOutput: compiledContract,
            sourceTreeHashHex,
            sources: usedSources,

Steps to Reproduce (for bugs)

Compile any contract and request AST in the output.

Context

Trying to get an AST of the contract using sol-compiler

Your Environment

Package	Version

└─ @0x/sol-compiler@4.4.3

[LogvinovLeon]

@merklejerk Could you please take a look when you have a moment? Should be a quick fix

[dorothy-zbornak]

Good to see you're still around, Leo. This should be fixed in sol-compiler@4.5.0, which I just published.