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Preserve sources of variable values #3811

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@yaacovCR yaacovCR commented Dec 31, 2022

#3077 rebased on main.

Depends on #3810

@leebyron comments from original PR:

By way of introducing type VariableValues, allows getVariableValues to return both the coerced values as well as the original sources, which are then made available in ExecutionContext.

While variable sources are not used directly here, they're used directly in #3065. This PR is pulled out as a pre-req to aid review

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I guess this should technically be a BREAKING CHANGE as the signature changes for getVariableValues and that is now exported.

@yaacovCR yaacovCR added PR: breaking change 💥 implementation requires increase of "major" version number and removed PR: internal 🏠 labels Jan 12, 2023
src/execution/values.ts Outdated Show resolved Hide resolved
@yaacovCR yaacovCR force-pushed the variable-value-sources-rebased branch 2 times, most recently from 65145f9 to ce33974 Compare January 31, 2023 19:47
@yaacovCR yaacovCR force-pushed the variable-value-sources-rebased branch 5 times, most recently from 12f67c0 to d8feffe Compare February 6, 2023 12:53
@yaacovCR yaacovCR force-pushed the variable-value-sources-rebased branch 2 times, most recently from d8486ae to 2211b7a Compare May 31, 2023 11:38
@yaacovCR yaacovCR force-pushed the variable-value-sources-rebased branch from 2211b7a to 9f85bc3 Compare March 20, 2024 11:25
@yaacovCR yaacovCR force-pushed the variable-value-sources-rebased branch from 9f85bc3 to 2906851 Compare September 15, 2024 10:37
@yaacovCR yaacovCR requested a review from a team as a code owner September 15, 2024 10:37
@yaacovCR yaacovCR force-pushed the variable-value-sources-rebased branch 4 times, most recently from 9dfe0a9 to 3d8be34 Compare September 15, 2024 11:43
@yaacovCR yaacovCR force-pushed the variable-value-sources-rebased branch 4 times, most recently from 9e7a08b to 12f30ec Compare September 15, 2024 14:17
@yaacovCR yaacovCR force-pushed the variable-value-sources-rebased branch 5 times, most recently from 5ee7a2f to 2fe5343 Compare September 17, 2024 12:21
Fixes graphql#3051

This change solves the problem of default values defined via SDL not always resolving correctly through introspection by preserving the original GraphQL literal in the schema definition. This changes argument and input field definitions `defaultValue` field from just the "value" to a new `GraphQLDefaultValueUsage` type which contains either -- but not both -- "value" and "literal" fields.

Here is the flow for how a default value defined in an SDL would be converted into a functional schema and back to an SDL:

**Before this change:**

```
(SDL) --parse-> (AST) --coerceInputLiteral--> (defaultValue config) --valueToAST--> (AST) --print --> (SDL)
```

`coerceInputLiteral` performs coercion which is a one-way function, and `valueToAST` is unsafe and set to be deprecated in graphql#3049.

**After this change:**

```
(SDL) --parse-> (defaultValue literal config) --print --> (SDL)
```
By way of introducing type `VariableValues`, allows `getVariableValues` to return both the coerced values as well as the original sources, which are then made available in `ExecutionContext`.
@yaacovCR yaacovCR force-pushed the variable-value-sources-rebased branch from 2fe5343 to 55b9361 Compare September 17, 2024 13:56
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