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feat: make GraphQL a peer dependency, support GraphQL v15.0 #1356

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merged 2 commits into from Aug 21, 2022
Merged

feat: make GraphQL a peer dependency, support GraphQL v15.0 #1356

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ebe786c
feat: move 'graphql' to peerDependencies. Add support for v15 of 'gra…
JohnDaly Aug 1, 2022
7a8482a
feat: marking 'graphql' as an optional peer dependency
JohnDaly Aug 3, 2022
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6 changes: 5 additions & 1 deletion package.json
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Expand Up @@ -77,7 +77,6 @@
"chalk": "4.1.1",
"chokidar": "^3.4.2",
"cookie": "^0.4.2",
"graphql": "^16.3.0",
"headers-polyfill": "^3.0.4",
"inquirer": "^8.2.0",
"is-node-process": "^1.0.1",
Expand Down Expand Up @@ -116,6 +115,7 @@
"eslint-plugin-prettier": "^3.4.0",
"fs-extra": "^10.0.0",
"fs-teardown": "^0.3.0",
"graphql": "^16.3.0",
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Is it safe to migrate to v16 given the optional range is 15/16? Are there any features that are dropped in v16 that we may accidentally rely upon?

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Since v16 is the version that MSW has used in the latest release, I think it makes sense to keep it as the devDependency version.

There are two main changes in this PR that affect run-time compatibility:

  1. Changing usage of OperationTypeNode from enum to string
  2. The parse function

Changing OperationTypeNode should be safe to do, the enum in v16 maps to the same strings that were used in v15.

The parse function from graphql is the only piece of runtime code that is actually used by MSW. It's being used to get the OperationDefinitionNode for the GraphQL operation that is intercepted. From what I can tell, the fields that MSW is interested in on OperationDefinitionNode are unchanged between v15 and v16.

Based on this, I think it should be safe to list v15 as a dependency.

It's also worth noting that v15 is, at the time of writing, the most commonly downloaded version of graphql on NPM (3+ million downloads a week, compared to ~2 million for v16). It would be good to be backwards compatible with v15, because lots of MSW users probably have that version in their projects.

"jest": "26",
"json-bigint": "^1.0.0",
"lint-staged": "^11.0.1",
Expand All @@ -134,9 +134,13 @@
"webpack-dev-server": "^3.11.2"
},
"peerDependencies": {
"graphql": "^15.0.0 || ^16.0.0",
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"typescript": ">= 4.2.x <= 4.7.x"
},
"peerDependenciesMeta": {
"graphql": {
"optional": true
},
"typescript": {
"optional": true
}
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2 changes: 1 addition & 1 deletion src/context/errors.ts
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@@ -1,4 +1,4 @@
import { GraphQLError } from 'graphql'
import type { GraphQLError } from 'graphql'
import { ResponseTransformer } from '../response'
import { jsonParse } from '../utils/internal/jsonParse'
import { mergeRight } from '../utils/internal/mergeRight'
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10 changes: 5 additions & 5 deletions src/graphql.ts
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@@ -1,4 +1,4 @@
import { DocumentNode, OperationTypeNode } from 'graphql'
import type { DocumentNode, OperationTypeNode } from 'graphql'
import { ResponseResolver } from './handlers/RequestHandler'
import {
GraphQLHandler,
Expand Down Expand Up @@ -83,7 +83,7 @@ const standardGraphQLHandlers = {
* })
* @see {@link https://mswjs.io/docs/api/graphql/query `graphql.query()`}
*/
query: createScopedGraphQLHandler(OperationTypeNode.QUERY, '*'),
query: createScopedGraphQLHandler('query' as OperationTypeNode, '*'),

/**
* Captures a GraphQL mutation by a given name.
Expand All @@ -93,14 +93,14 @@ const standardGraphQLHandlers = {
* })
* @see {@link https://mswjs.io/docs/api/graphql/mutation `graphql.mutation()`}
*/
mutation: createScopedGraphQLHandler(OperationTypeNode.MUTATION, '*'),
mutation: createScopedGraphQLHandler('mutation' as OperationTypeNode, '*'),
}

function createGraphQLLink(url: Path): typeof standardGraphQLHandlers {
return {
operation: createGraphQLOperationHandler(url),
query: createScopedGraphQLHandler(OperationTypeNode.QUERY, url),
mutation: createScopedGraphQLHandler(OperationTypeNode.MUTATION, url),
query: createScopedGraphQLHandler('query' as OperationTypeNode, url),
mutation: createScopedGraphQLHandler('mutation' as OperationTypeNode, url),
}
}

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2 changes: 1 addition & 1 deletion src/handlers/GraphQLHandler.ts
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@@ -1,4 +1,4 @@
import { DocumentNode, OperationTypeNode } from 'graphql'
import type { DocumentNode, OperationTypeNode } from 'graphql'
import { SerializedResponse } from '../setupWorker/glossary'
import { data } from '../context/data'
import { extensions } from '../context/extensions'
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6 changes: 4 additions & 2 deletions src/utils/internal/parseGraphQLRequest.ts
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@@ -1,8 +1,7 @@
import {
import type {
DocumentNode,
OperationDefinitionNode,
OperationTypeNode,
parse,
} from 'graphql'
import { GraphQLVariables } from '../../handlers/GraphQLHandler'
import { getPublicUrlFromRequest } from '../request/getPublicUrlFromRequest'
Expand Down Expand Up @@ -41,6 +40,9 @@ export function parseDocumentNode(node: DocumentNode): ParsedGraphQLQuery {

function parseQuery(query: string): ParsedGraphQLQuery | Error {
try {
// Since 'graphql' is an optional peer dependency,
// we'll attempt to import it dynamically
const { parse } = require('graphql')
const ast = parse(query)
return parseDocumentNode(ast)
} catch (error) {
Expand Down