Use custom conditions in path completions (microsoft#54332)

Author: emmatown

src/services/stringCompletions.ts

@@ -44,6 +44,7 @@ import {
     flatten,
     forEachAncestorDirectory,
     getBaseFileName,
+    getConditions,
     getContextualTypeFromParent,
     getDirectoryPath,
     getEffectiveTypeRoots,
@@ -924,7 +925,7 @@ function getCompletionEntriesForNonRelativeModules(
                             }
                             const keys = getOwnKeys(exports);
                             const fragmentSubpath = components.join("/") + (components.length && hasTrailingDirectorySeparator(fragment) ? "/" : "");
-                            const conditions = mode === ModuleKind.ESNext ? ["node", "import", "types"] : ["node", "require", "types"];
+                            const conditions = getConditions(compilerOptions, mode === ModuleKind.ESNext);
                             addCompletionEntriesFromPathsOrExports(
                                 result,
                                 fragmentSubpath,

tests/cases/fourslash/pathCompletionsPackageJsonExportsBundlerNoNodeCondition.ts

@@ -0,0 +1,31 @@
+/// <reference path="fourslash.ts" />
+
+// @moduleResolution: bundler
+
+// @Filename: /node_modules/foo/package.json
+//// {
+////   "name": "foo",
+////   "exports": {
+////     "./only-for-node": {
+////       "node": "./something.js"
+////     },
+////     "./for-everywhere": "./other.js",
+////   }
+//// }
+
+// @Filename: /node_modules/foo/something.d.ts
+//// export const index = 0;
+
+// @Filename: /node_modules/foo/other.d.ts
+//// export const index = 0;
+
+// @Filename: /index.ts
+//// import { } from "foo//**/";
+
+verify.completions({
+  marker: "",
+  isNewIdentifierLocation: true,
+  exact: [
+    { name: "for-everywhere", kind: "script", kindModifiers: "" },
+  ]
+});

tests/cases/fourslash/pathCompletionsPackageJsonExportsCustomConditions.ts

@@ -0,0 +1,28 @@
+/// <reference path="fourslash.ts" />
+
+// @module: nodenext
+// @customConditions: custom-condition
+
+// @Filename: /node_modules/foo/package.json
+//// {
+////   "name": "foo",
+////   "exports": {
+////     "./only-with-custom-conditions": {
+////       "custom-condition": "./something.js"
+////     },
+////   }
+//// }
+
+// @Filename: /node_modules/foo/something.d.ts
+//// export const index = 0;
+
+// @Filename: /index.ts
+//// import { } from "foo//**/";
+
+verify.completions({
+  marker: "",
+  isNewIdentifierLocation: true,
+  exact: [
+    { name: "only-with-custom-conditions", kind: "script", kindModifiers: "" },
+  ]
+});