Automatically list exports

Author: garronej

package.json

@@ -8,6 +8,16 @@
     },
     "main": "dist/lib/index.js",
     "types": "dist/lib/index.d.ts",
+    "module": "dist/lib/index.js",
+    "exports": {
+        ".": "./dist/lib/index.js",
+        "./next": "./dist/next.js",
+        "./mui": "./dist/mui.js",
+        "./Tabs": "./dist/Tabs.js",
+        "./Header": "./dist/Header.js",
+        "./DarkModeSwitch": "./dist/DarkModeSwitch.js",
+        "./Alert": "./dist/Alert.js"
+    },
     "scripts": {
         "build": "ts-node src/scripts/build",
         "yarn-link": "ts-node src/scripts/yarn-link.ts",
@@ -23,7 +33,8 @@
         "grant_exec_perms": "node dist/bin/tools/grant_exec_perms",
         "storybook": "yarn build && yarn only-include-used-icons && start-storybook -p 6006",
         "build-storybook": "yarn build && yarn only-include-used-icons && build-storybook",
-        "only-include-used-icons": "node dist/bin/only-include-used-icons.js"
+        "only-include-used-icons": "node dist/bin/only-include-used-icons.js",
+        "list-exports": "ts-node src/scripts/list-exports.ts"
     },
     "bin": {
         "copy-dsfr-to-public": "dist/bin/copy-dsfr-to-public.js",
@@ -39,7 +50,7 @@
     },
     "husky": {
         "hooks": {
-            "pre-commit": "lint-staged -v"
+            "pre-commit": "yarn list-exports && lint-staged -v"
         }
     },
     "author": "u/garronej",

src/scripts/build.ts

@@ -104,7 +104,21 @@ import { oppa } from "oppa";
                         return {
                             ...packageJsonParsed,
                             "main": packageJsonParsed["main"].replace(/^dist\//, ""),
-                            "types": packageJsonParsed["types"].replace(/^dist\//, "")
+                            "types": packageJsonParsed["types"].replace(/^dist\//, ""),
+                            "module": packageJsonParsed["module"].replace(/^dist\//, ""),
+                            "exports": Object.fromEntries(
+                                Object.entries(packageJsonParsed["exports"]).map(([path, obj]) => [
+                                    path,
+                                    Object.fromEntries(
+                                        Object.entries(obj as Record<string, string>).map(
+                                            ([type, path]) => [
+                                                type,
+                                                path.replace(/^\.\/dist\//, "./")
+                                            ]
+                                        )
+                                    )
+                                ])
+                            )
                         };
                     })(),
                     null,

src/scripts/list-exports.ts

@@ -0,0 +1,42 @@
+import * as fs from "fs";
+import { join as pathJoin } from "path";
+import { getProjectRoot } from "../bin/tools/getProjectRoot";
+import { exclude } from "tsafe/exclude";
+
+const packageJsonFilePath = pathJoin(getProjectRoot(), "package.json");
+
+const packageJsonParsed = JSON.parse(fs.readFileSync(packageJsonFilePath).toString("utf8"));
+
+fs.writeFileSync(
+    packageJsonFilePath,
+    Buffer.from(
+        JSON.stringify(
+            {
+                ...packageJsonParsed,
+                "exports": {
+                    ".": `./${packageJsonParsed["module"]}`,
+                    ...Object.fromEntries(
+                        fs
+                            .readdirSync(pathJoin(getProjectRoot(), "src"))
+                            .map(basename => {
+                                const match = basename.match(/^([^.]+)\.tsx?$/);
+
+                                if (match === null) {
+                                    return undefined;
+                                }
+
+                                return match[1];
+                            })
+                            .filter(exclude(undefined))
+                            .sort()
+                            .reverse()
+                            .map(name => [`./${name}`, `./dist/${name}.js`])
+                    )
+                }
+            },
+            null,
+            2
+        ),
+        "utf8"
+    )
+);