line-replace - npm Package Compare versions

Comparing version 1.0.3 to 2.0.1

bin/index.js

@@ -34,10 +34,15 @@ #!/usr/bin/env node
 
-function onReplace (data) {
-  if (data.text === data.replacedText) displayResult('noChanges', data)
-  if (!data.text) displayResult('lineCleared', data)
-  if (!data.replacedText) displayResult('blankLineReplaced', data)
+function onReplace(data) {
+  const { text, replacedText, error } = data
+  if (error) {
+    displayResult('error', data)
+    return
+  }
+  if (text === replacedText) displayResult('noChanges', data)
+  if (!text) displayResult('lineCleared', data)
+  if (!replacedText) displayResult('blankLineReplaced', data)
   displayResult('changed', data)
 }
 
-function displayResult (type, data) {
+function displayResult(type, data) {
   const message = getResultMessage(type, data)
@@ -48,4 +53,5 @@ console.log(message)
 
-function getResultMessage (type, data) {
-  const fileLine = `${data.file}:${data.line}`
+function getResultMessage(type, data) {
+  const { file, line, text, replacedText, error } = data
+  const fileLine = `${file}:${line}`
 
@@ -55,3 +61,3 @@ const blankLineReplaced = `
   was replaced with:
-  ${data.text}
+  ${text}
   `
@@ -66,12 +72,17 @@ const noChanges = `
   Previous content:
-  ${data.replacedText}
+  ${replacedText}
   `
   const changed = `
   The content on '${fileLine}':
-  ${data.replacedText}
+  ${replacedText}
 
   was replaced with:
-  ${data.text}
+  ${text}
   `
 
+  const error = `
+  Replacement on '${fileLine}' FAILED:
+  ${error.message}
+  `
+
   const messages = {
@@ -81,3 +92,4 @@ blankLineReplaced,
     lineCleared,
-    changed
+    changed,
+    error
   }
@@ -88,3 +100,3 @@
 
-function showUsage () {
+function showUsage() {
   console.log(`
@@ -91,0 +103,0 @@ USAGE:

package.json

 {
   "name": "line-replace",
-  "version": "1.0.3",
+  "version": "2.0.1",
   "description": "Replace a line in a file with passed string.",
   "main": "src/line-replace.js",
   "scripts": {
-    "test-focus": "standard-focus",
-    "test": "standard && mocha",
+    "test": "mocha",
     "test-watch": "mocha --watch --recursive",
@@ -23,3 +22,6 @@ "start": "node ./bin/index.js"
   ],
-  "author": "Alberto Miranda",
+  "author": {
+    "name": "Alberto Miranda",
+    "url": "http://albertomiranda.com.ar"
+  },
   "license": "MIT",
@@ -32,13 +34,5 @@ "bugs": {
   "devDependencies": {
-    "chai": "^3.5.0",
-    "mocha": "^3.2.0",
-    "standard-focus": "^1.1.1"
-  },
-  "standard": {
-    "globals": [
-      "describe",
-      "it",
-      "beforeEach"
-    ]
+    "chai": "^4.2.0",
+    "mocha": "^7.1.2"
   }
 }

README.md

 # line-replace
+
 Replace a line in a file with passed string.
@@ -9,6 +10,6 @@
 Global, for command line usage:
-`npm install -g line-replace`
+`npm i -g line-replace`
 
 Local, for programatic usage in your project:
-`npm install --save line-replace`
+`npm i line-replace`
 
@@ -29,2 +30,12 @@ ## Command line usage
 
+You can also use it directly with `npx`:
+
+`npx line-replace [file]:[line] [[string]]`
+
+For example:
+
+`npx line-replace test.txt:1 'HEY!'`
+
+Note that **line numbers start at 1**.
+
 ## Programatic usage
@@ -39,3 +50,3 @@
   addNewLine: true,
-  callback: ({file, line, text, replacedText}) => {}
+  callback: ({ file, line, text, replacedText, error }) => {}
 })
@@ -51,2 +62,3 @@ ```
 For example, with the following content:
+
 ```
@@ -59,2 +71,3 @@ First line.
 Running:
+
 ```
@@ -66,3 +79,3 @@ lineReplace({
   addNewLine: false,
-  callback: ({file, line, text, replacedText}) => {}
+  callback: ({file, line, text, replacedText, error}) => {}
 })
@@ -72,2 +85,3 @@ ```
 Will result in:
+
 ```
@@ -82,2 +96,7 @@ First line.
 
-Enjoy!
+## Changelog
+
+### v2.0
+
+- FS sync methods replaced with async + [utils.promisify](https://nodejs.org/dist/latest-v8.x/docs/api/util.html#util_util_promisify_original) (added in Node v8).
+- Passing errors to callback.

src/line-replace.js

 const fs = require('fs')
+const util = require('util')
 const readline = require('readline')
 const stream = require('stream')
+const rename = util.promisify(fs.rename)
+const unlink = util.promisify(fs.unlink)
 
-function lineReplace ({file, line, text, addNewLine = true, callback}) {
+function lineReplace({ file, line, text, addNewLine = true, callback }) {
   const readStream = fs.createReadStream(file)
@@ -12,2 +15,17 @@ const tempFile = `${file}.tmp`
 
+  readStream.on('error', async ({ message }) => {
+    await unlink(tempFile)
+    callback({ error: message, file, line, replacedText, text })
+  })
+
+  writeStream.on('error', async ({ message }) => {
+    await unlink(tempFile)
+    callback({ error: message, file, line, replacedText, text })
+  })
+
+  rl.on('error', async ({ message }) => {
+    await unlink(tempFile)
+    callback({ error: message, file, line, replacedText, text })
+  })
+
   let currentLine = 0
@@ -31,11 +49,12 @@ rl.on('line', (originalLine) => {
     // Replace original file with fixed file (the temp file).
-    writeStream.end(() => {
+    writeStream.end(async () => {
       try {
-        fs.unlinkSync(file) // Delete original file.
-        fs.renameSync(tempFile, file) // Rename temp file with original file name.
-      } catch (e) {
-        throw e
+        await unlink(file) // Delete original file.
+        await rename(tempFile, file) // Rename temp file with original file name.
+      } catch (error) {
+        callback({ error, file, line, replacedText, text })
+        return
       }
 
-      callback({file, line, replacedText, text})
+      callback({ file, line, replacedText, text })
     })
@@ -42,0 +61,0 @@ })

test/line-replace.spec.js

@@ -1,2 +0,2 @@
-const {expect} = require('chai')
+const { expect } = require('chai')
 const fs = require('fs')
@@ -19,5 +19,7 @@ const path = require('path')
 
-    function onReplace (replaceData) {
-      const fileData = fs.readFileSync(testFile, {encoding: 'utf8'})
-      expect(fileData).to.equal(testFileContent.replace('First line.', 'Hi there!'))
+    function onReplace(replaceData) {
+      const fileData = fs.readFileSync(testFile, { encoding: 'utf8' })
+      expect(fileData).to.equal(
+        testFileContent.replace('First line.', 'Hi there!')
+      )
       done()
@@ -35,5 +37,10 @@ }
 
-    function onReplace (replaceData) {
-      const fileData = fs.readFileSync(testFile, {encoding: 'utf8'})
-      expect(fileData).to.equal(testFileContent.replace('This kinda works!\n', `This kinda works!\nLet's rock!`))
+    function onReplace(replaceData) {
+      const fileData = fs.readFileSync(testFile, { encoding: 'utf8' })
+      expect(fileData).to.equal(
+        testFileContent.replace(
+          'This kinda works!\n',
+          `This kinda works!\nLet's rock!`
+        )
+      )
       done()
@@ -51,5 +58,7 @@ }
 
-    function onReplace (replaceData) {
-      const fileData = fs.readFileSync(testFile, {encoding: 'utf8'})
-      expect(fileData).to.equal(testFileContent.replace('This kinda works!', ''))
+    function onReplace(replaceData) {
+      const fileData = fs.readFileSync(testFile, { encoding: 'utf8' })
+      expect(fileData).to.equal(
+        testFileContent.replace('This kinda works!', '')
+      )
       done()
@@ -68,4 +77,4 @@ }
 
-    function onReplace (replaceData) {
-      const fileData = fs.readFileSync(testFile, {encoding: 'utf8'})
+    function onReplace(replaceData) {
+      const fileData = fs.readFileSync(testFile, { encoding: 'utf8' })
       const newContent = testFileContent
@@ -87,3 +96,3 @@ .replace('This kinda works!\n', '')
 
-    function onReplace (replaceData) {
+    function onReplace(replaceData) {
       expect(replaceData.text).to.equal('Hello, everything ok there?')
@@ -96,5 +105,27 @@ expect(replaceData.replacedText).to.equal('First line.')
   })
+
+  it('should pass errors to callback', (done) => {
+    const text = 'Hello, did you get the error?'
+    const unexistentFile = 'does-not-exist.txt'
+    lineReplace({
+      file: unexistentFile,
+      line: 1,
+      text,
+      callback: onReplace
+    })
+
+    function onReplace({ text, replacedText, line, file, error }) {
+      expect(text).to.equal(text)
+      expect(replacedText).to.equal(undefined)
+      expect(line).to.equal(1)
+      expect(file).to.equal(unexistentFile)
+      expect(error).to.equal(
+        `ENOENT: no such file or directory, open '${file}'`
+      )
+      done()
+    }
+  })
 })
 
-function resetTestFile () {
+function resetTestFile() {
   testFileContent = `First line.
@@ -101,0 +132,0 @@ This kinda works!

test/test.txt

@@ -1,2 +0,2 @@
-Hello, everything ok there?
+First line.
 This kinda works!
@@ -3,0 +3,0 @@

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Found 1 instance in 1 package

Fixed alerts

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Improved metrics

Total package byte prevSize

12378

increased by16.65%

Dev dependency count

2

decreased by-33.33%

Lines of code

301

increased by22.86%

Number of lines in readme file

95

increased by25%

No dependency changes