Apollo Agnostic Execute

[dOrgJelli]

Closes https://github.com/graphprotocol/mutations/issues/11

Changes to note:

• The mutations module is now required export schema: string as part of the default object.
• Apollo is still needed in @graphprotocol/mutations because we need to create a "remote query executor" when context.client isn't present. The imports required are:

  // See: packages/mutations/src/executors/query/remoteResolvers.ts
  import { execute, makePromise } from 'apollo-link'
  import { createHttpLink } from 'apollo-link-http'

• Proper data result handling for multiple mutation execution has been implemented. The naming convention is the same as the mutation state. See the test at mutations.test.ts line #160 for an example of this.
• createMutationsLink(...) has been moved to @graphprotocol/mutations-apollo-react

Externalities

• graph-cli will need to be updated to (1) check for the schema property in the default export, (2) verify it's typeof string, and (3) try to buildSchema to verify it's valid and has all the correct resolvers defined.
• An example of how to import a schema.graphql file, as a string, into Javascript should be created for developers. In order to do this a developer would either have to modify webpack/babel, or create a declare module '*.graphql' { ... } in Typescript, letting tsc know that the file being imported should be treated as a string.

[codecov[bot]]

Codecov Report

Merging #12 into master will increase coverage by 0.67%. The diff coverage is 97.18%.

@@            Coverage Diff             @@
##           master      #12      +/-   ##
==========================================
+ Coverage      97%   97.68%   +0.67%     
==========================================
  Files          14       14              
  Lines         234      259      +25     
  Branches       35       42       +7     
==========================================
+ Hits          227      253      +26     
+ Misses          3        1       -2     
- Partials        4        5       +1

Impacted Files	Coverage Δ
packages/mutations/src/mutationState/index.ts	100% <ø> (+6.06%)	:arrow_up:
packages/mutations/src/utils/schema.ts	100% <ø> (ø)	:arrow_up:
packages/mutations/src/utils/async.ts	100% <100%> (ø)	:arrow_up:
...utations-apollo-react/src/__tests__/utils/index.ts	100% <100%> (ø)	:arrow_up:
packages/mutations-apollo-react/src/index.ts	96.42% <100%> (+2.31%)	:arrow_up:
packages/mutations/src/index.ts	93.33% <94.11%> (-1.91%)	:arrow_down:
.../mutations/src/executors/mutation/localResolver.ts	97.56% <97.43%> (+4.22%)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update f0f500c...64b9075. Read the comment docs.

[Jannis]

Actually, I'm going to rebase this before merging, to clean up the commit messages.