From 061960f789e4f9aa1795399dbb36a2540f38e232 Mon Sep 17 00:00:00 2001
From: Jerko Steiner <jerko.steiner@gmail.com>
Date: Mon, 16 Sep 2019 22:57:46 +0700
Subject: [PATCH] Add script for listing dependencies of projects

---
 packages/scripts/src/getFolders.ts            |  11 ++
 packages/scripts/src/scripts/imports.ts       | 118 ++++++++++++++++++
 packages/scripts/src/scripts/index.ts         |   1 +
 packages/scripts/src/scripts/syncEsmConfig.ts |   7 +-
 4 files changed, 132 insertions(+), 5 deletions(-)
 create mode 100644 packages/scripts/src/getFolders.ts
 create mode 100644 packages/scripts/src/scripts/imports.ts

diff --git a/packages/scripts/src/getFolders.ts b/packages/scripts/src/getFolders.ts
new file mode 100644
index 0000000..54a24c9
--- /dev/null
+++ b/packages/scripts/src/getFolders.ts
@@ -0,0 +1,11 @@
+import { readdirSync, lstatSync } from "fs"
+import { join } from "path"
+
+export function getFolders(dir: string): string[] {
+  return readdirSync(dir)
+  .map(file => join(dir, file))
+  .filter(dir => {
+    const stat = lstatSync(dir)
+    return stat.isDirectory()
+  })
+}
diff --git a/packages/scripts/src/scripts/imports.ts b/packages/scripts/src/scripts/imports.ts
new file mode 100644
index 0000000..4544ee0
--- /dev/null
+++ b/packages/scripts/src/scripts/imports.ts
@@ -0,0 +1,118 @@
+import * as ts from 'typescript'
+import {argparse, arg} from '@rondo.dev/argparse'
+import {info, error} from '../log'
+import { getFolders } from '../getFolders'
+
+export function imports(...argv: string[]): string[] {
+  const args = argparse({
+    packages: arg('string', {default: 'packages/', positional: true}),
+    root: arg('string', {default: 'package.json'}),
+    debug: arg('boolean'),
+    help: arg('boolean', {alias: 'h'}),
+    output: arg('string', {alias: 'o', default: '-'}),
+  }).parse(argv)
+
+  function debug(m: string, ...meta: Array<unknown>) {
+    if (args.debug) {
+      info(m, ...meta)
+    }
+  }
+
+  /** Generate interfaces for all exported classes in a set of .ts files */
+  function collectImports(
+    projectDir: string,
+    tsconfigFileName: string,
+  ): string[] {
+    // Build a program using the set of root file names in fileNames
+    // const program = ts.createProgram(fileNames, options)
+    const configPath = ts.findConfigFile(
+      projectDir,
+      ts.sys.fileExists,
+      tsconfigFileName,
+    )
+    if (!configPath) {
+      throw new Error('No tsconfig.json found')
+    }
+
+    const parseConfigHost: ts.ParseConfigHost = {
+      fileExists: ts.sys.fileExists,
+      readFile: ts.sys.readFile,
+      readDirectory: ts.sys.readDirectory,
+      useCaseSensitiveFileNames: true,
+    }
+    const configFile = ts.readConfigFile(configPath, ts.sys.readFile);
+    const parsedCommandLine = ts.parseJsonConfigFileContent(
+      configFile.config,
+      parseConfigHost,
+      projectDir,
+    );
+
+    const program = ts.createProgram(
+      parsedCommandLine.fileNames,
+      parsedCommandLine.options,
+    )
+
+    const modules = new Set<string>()
+
+    // Get the checker, we will use it to find more about classes
+    // const checker = program.getTypeChecker()
+
+    function isInstalledModule(moduleName: string) {
+      return !moduleName.startsWith('.')
+    }
+
+    /**
+     * Visit nodes finding exported classes
+     */
+    function visit(sourceFile: ts.SourceFile, node: ts.Node) {
+      if (ts.isImportDeclaration(node)) {
+        const text = node.moduleSpecifier.getText(sourceFile)
+        const name = text.substring(1, text.length - 1)
+        if (isInstalledModule(name)) {
+          let resolved: string
+          try {
+            resolved = require.resolve(name)
+          } catch (err) {
+            error('Warning require.resolve: %s', err.message)
+            return
+          }
+
+          if (resolved === name) {
+            // Names of modules provided by NodeJS like "fs" will be the same
+            return
+          }
+
+          if (!modules.has(name)) {
+            debug(name)
+            modules.add(name)
+          }
+
+        }
+
+        ts.forEachChild(node, visit.bind(null, sourceFile))
+      }
+    }
+
+    for (const sourceFile of program.getSourceFiles()) {
+      if (!sourceFile.isDeclarationFile) {
+        ts.forEachChild(sourceFile, visit.bind(null, sourceFile))
+      }
+    }
+
+    return Array.from(modules)
+  }
+
+  getFolders(args.packages)
+  .forEach(pkgDir => {
+    error('Entering: %s', pkgDir)
+    const modules = collectImports(pkgDir, 'tsconfig.json')
+  })
+
+  if (args.output === '-') {
+    // info(value)
+  } else {
+    // fs.writeFileSync(args.output, value)
+  }
+
+  return []
+}
diff --git a/packages/scripts/src/scripts/index.ts b/packages/scripts/src/scripts/index.ts
index 0fdb7cb..65df646 100644
--- a/packages/scripts/src/scripts/index.ts
+++ b/packages/scripts/src/scripts/index.ts
@@ -2,6 +2,7 @@ export * from './add'
 export * from './build'
 export * from './clean'
 export * from './exportDir'
+export * from './imports'
 export * from './intergen'
 export * from './syncEsmConfig'
 export * from './update'
diff --git a/packages/scripts/src/scripts/syncEsmConfig.ts b/packages/scripts/src/scripts/syncEsmConfig.ts
index c83990f..eb2c5e1 100644
--- a/packages/scripts/src/scripts/syncEsmConfig.ts
+++ b/packages/scripts/src/scripts/syncEsmConfig.ts
@@ -2,6 +2,7 @@ import * as fs from 'fs'
 import * as path from 'path'
 import {argparse, arg} from '@rondo.dev/argparse'
 import {info} from '../log'
+import { getFolders } from '../getFolders'
 
 const TSCONFIG_FILENAME = 'tsconfig.json'
 const TSCONFIG_ESM_FILENAME = 'tsconfig.esm.json'
@@ -19,11 +20,7 @@ export async function syncEsmConfig(...argv: string[]) {
 
   const pkgDir = args.packages
 
-  fs.readdirSync(pkgDir)
-  .filter(file => {
-    const stat = fs.lstatSync(path.join(pkgDir, file))
-    return stat.isDirectory()
-  })
+  getFolders(pkgDir)
   .map(file => path.join(pkgDir, file, TSCONFIG_FILENAME))
   .filter(file => fs.existsSync(file))
   .forEach(file => {