feat: use prettier api to load config (#460)

package.json

@@ -89,7 +89,7 @@
     "jest": "^26.0.1",
     "jest-watch-typeahead": "^0.6.0",
     "lint-staged": "^7.3.0",
-    "prettier": "^1.19.1",
+    "prettier": "^2.0.5",
     "sort-package-json": "^1.22.1",
     "ts-jest": "^26.0.0",
     "ts-node": "^7.0.1",

src/builder.ts

@@ -225,8 +225,16 @@ export interface BuilderConfig {
     outputPath: string
   ) => TypegenInfo | PromiseLike<TypegenInfo>;
   /**
-   * Either an absolute path to a .prettierrc file, or an object
-   * with relevant Prettier rules to be used on the generated output
+   * Adjust the Prettier options used while running prettier over
+   * the generated output.
+   *
+   * Can be an absolute path to a Prettier config file like
+   * .prettierrc or package.json with "prettier" field, or an object
+   * of Prettier options.
+   *
+   * If provided, you must have prettier available as an importable dep
+   * in your project.
+   *
    */
   prettierConfig?: string | object;
   /**
@@ -1651,10 +1659,12 @@ export function makeSchema(config: SchemaConfig): NexusGraphQLSchema {
       typegenPromise
         .then(() => {
           console.log(`Generated Artifacts:
-          TypeScript Types  ==> ${typegenConfig.outputs.typegen ||
-            "(not enabled)"}
-          GraphQL Schema    ==> ${typegenConfig.outputs.schema ||
-            "(not enabled)"}`);
+          TypeScript Types  ==> ${
+            typegenConfig.outputs.typegen || "(not enabled)"
+          }
+          GraphQL Schema    ==> ${
+            typegenConfig.outputs.schema || "(not enabled)"
+          }`);
           process.exit(0);
         })
         .catch((e) => {

src/plugins/connectionPlugin.ts

@@ -930,8 +930,9 @@ const getTypeNames = (
   if (isConnectionFieldExtended(fieldConfig)) {
     connectionName = `${parentTypeName}${upperFirst(fieldName)}_Connection`;
   } else {
-    connectionName = `${pluginConfig.typePrefix ||
-      ""}${targetTypeName}Connection`;
+    connectionName = `${
+      pluginConfig.typePrefix || ""
+    }${targetTypeName}Connection`;
   }
 
   // If we have modified the "edge" at all, then we need
@@ -964,10 +965,7 @@ const isEdgeFieldExtended = (fieldConfig: ConnectionFieldConfig) => {
 };
 
 const upperFirst = (fieldName: string) => {
-  return fieldName
-    .slice(0, 1)
-    .toUpperCase()
-    .concat(fieldName.slice(1));
+  return fieldName.slice(0, 1).toUpperCase().concat(fieldName.slice(1));
 };
 
 // Add some sanity checking beyond the normal type checks.

src/plugins/fieldAuthorizePlugin.ts

@@ -116,7 +116,7 @@ export const fieldAuthorizePlugin = (
         }
       }
       // The authorize wrapping resolver.
-      return function(root, args, ctx, info, next) {
+      return function (root, args, ctx, info, next) {
         let toComplete;
         try {
           toComplete = authorize(root, args, ctx, info);

src/typegenFormatPrettier.ts

@@ -1,10 +1,13 @@
 import path from "path";
+import type * as Prettier from "prettier";
 
 export type TypegenFormatFn = (
   content: string,
   type: "types" | "schema"
 ) => string | Promise<string>;
 
+// todo use Prettier.Options type instead of just `object`
+// but will this force us to make prettier a dep then since that type would be user-visible?
 export function typegenFormatPrettier(
   prettierConfig: string | object
 ): TypegenFormatFn {
@@ -24,6 +27,9 @@ export function typegenFormatPrettier(
       );
       return content;
     }
+
+    let prettierConfigResolved: Prettier.Options;
+
     if (typeof prettierConfig === "string") {
       /* istanbul ignore if */
       if (!path.isAbsolute(prettierConfig)) {
@@ -34,13 +40,15 @@ export function typegenFormatPrettier(
         );
         return content;
       }
-      const fs = require("fs") as typeof import("fs");
-      const util = require("util") as typeof import("util");
-      const readFile = util.promisify(fs.readFile);
-      prettierConfig = JSON.parse(await readFile(prettierConfig, "utf8"));
+      prettierConfigResolved = (await prettier.resolveConfig("ignore_this", {
+        config: prettierConfig,
+      }))!; // non-null assert b/c config file is explicitly passed
+    } else {
+      prettierConfigResolved = prettierConfig;
     }
+
     return prettier.format(content, {
-      ...(prettierConfig as object),
+      ...prettierConfigResolved,
       parser: type === "types" ? "typescript" : "graphql",
     });
   };

src/typegenPrinter.ts

@@ -228,8 +228,9 @@ export class TypegenPrinter {
               val
             )};`;
           }
-          return `    ${key}${val.value.typeDefinition ||
-            `(...args: any): void`}`;
+          return `    ${key}${
+            val.value.typeDefinition || `(...args: any): void`
+          }`;
         })
       )
       .concat([`  }`, `}`])
@@ -255,8 +256,9 @@ export class TypegenPrinter {
               val
             )};`;
           }
-          return `    ${key}${val.value.typeDefinition ||
-            `(...args: any): void`}`;
+          return `    ${key}${
+            val.value.typeDefinition || `(...args: any): void`
+          }`;
         })
       )
       .concat([`  }`, `}`])

src/utils.ts

@@ -62,7 +62,7 @@ export function suggestionList(
     }
   }
 
-  return Object.keys(optionsByDistance).sort(function(a, b) {
+  return Object.keys(optionsByDistance).sort(function (a, b) {
     return optionsByDistance[a] - optionsByDistance[b];
   });
 }

yarn.lock

@@ -4390,11 +4390,16 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
-prettier@^1.16.0, prettier@^1.19.1:
+prettier@^1.16.0:
   version "1.19.1"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.1.tgz#f7d7f5ff8a9cd872a7be4ca142095956a60797cb"
   integrity sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==
 
+prettier@^2.0.5:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.0.5.tgz#d6d56282455243f2f92cc1716692c08aa31522d4"
+  integrity sha512-7PtVymN48hGcO4fGjybyBSIWDsLU4H4XlvOHfq91pz9kkGlonzwTfYkaIEwiRg/dAJF9YlbsduBAgtYLi+8cFg==
+
 pretty-format@^23.6.0:
   version "23.6.0"
   resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-23.6.0.tgz#5eaac8eeb6b33b987b7fe6097ea6a8a146ab5760"