feat: add base send-file transform (#9)

* add base send-file transform

* update test files for send-file

---------

Co-authored-by: Filip Kudła <[email protected]>

Author: kjugi

transforms/__test__/send-file.spec.ts

@@ -0,0 +1,3 @@
+import { testSpecBuilder } from './util'
+
+testSpecBuilder('send-file')

transforms/__testfixtures__/send-file/send-file.input.ts

@@ -0,0 +1,59 @@
+import express from "express";
+import path from "path";
+import sendfile from "other-place"
+
+const app = express();
+const options = {
+  root: path.join(__dirname, 'public'),
+  dotfiles: 'deny',
+  headers: {
+    'x-timestamp': Date.now(),
+    'x-sent': true
+  }
+}
+
+const sharedSendFile = (res, next, fileName) => {
+  res.sendfile(fileName, options, (err) => {
+    if (err) {
+      next(err)
+    } else {
+      console.log('Sent:', fileName)
+    }
+  })
+}
+
+app.get('/file/:name', (req, res, next) => {
+  const fileName = req.params.name
+
+  res.sendfile(fileName, options, (err) => {
+    if (err) {
+      next(err)
+    } else {
+      console.log('Sent:', fileName)
+    }
+  })
+  sharedSendFile(res, next, fileName);
+})
+
+app.get('/filename/:name', function (req, res, next) {
+  const fileName = req.params.name
+  
+  res.sendfile(fileName, options, (err) => {
+    if (err) {
+      next(err)
+    } else {
+      console.log('Sent:', fileName)
+    }
+  })
+  sharedSendFile(res, next, fileName);
+})
+
+app.get('/file-handler', (req, res, next) => {
+  sendfile('test', options, (err) => {
+    if (err) {
+      next(err)
+    } else {
+      console.log('Sent:', 'test')
+    }
+  })
+})

transforms/__testfixtures__/send-file/send-file.output.ts

@@ -0,0 +1,59 @@
+import express from "express";
+import path from "path";
+import sendfile from "other-place"
+
+const app = express();
+const options = {
+  root: path.join(__dirname, 'public'),
+  dotfiles: 'deny',
+  headers: {
+    'x-timestamp': Date.now(),
+    'x-sent': true
+  }
+}
+
+const sharedSendFile = (res, next, fileName) => {
+  res.sendFile(fileName, options, (err) => {
+    if (err) {
+      next(err)
+    } else {
+      console.log('Sent:', fileName)
+    }
+  })
+}
+
+app.get('/file/:name', (req, res, next) => {
+  const fileName = req.params.name
+
+  res.sendFile(fileName, options, (err) => {
+    if (err) {
+      next(err)
+    } else {
+      console.log('Sent:', fileName)
+    }
+  })
+  sharedSendFile(res, next, fileName);
+})
+
+app.get('/filename/:name', function (req, res, next) {
+  const fileName = req.params.name
+  
+  res.sendFile(fileName, options, (err) => {
+    if (err) {
+      next(err)
+    } else {
+      console.log('Sent:', fileName)
+    }
+  })
+  sharedSendFile(res, next, fileName);
+})
+
+app.get('/file-handler', (req, res, next) => {
+  sendfile('test', options, (err) => {
+    if (err) {
+      next(err)
+    } else {
+      console.log('Sent:', 'test')
+    }
+  })
+})

transforms/send-file.ts

@@ -0,0 +1,23 @@
+import type { API, FileInfo } from 'jscodeshift'
+import { CallExpression, withParser } from 'jscodeshift'
+
+export default function transformer(file: FileInfo, _api: API): string {
+  const parser = withParser('ts')
+
+  return parser(file.source)
+    .find(CallExpression, {
+      callee: {
+        property: {
+          name: 'sendfile',
+        },
+      },
+    })
+    .map((path) => {
+      if (path.node.callee.type === 'MemberExpression' && path.node.callee.property.type === 'Identifier') {
+        path.node.callee.property.name = 'sendFile'
+      }
+
+      return path
+    })
+    .toSource()
+}