feat: minify json

README.md

@@ -7,7 +7,7 @@
 [![Known Vulnerabilities](https://snyk.io/test/npm/hexo-yam/badge.svg)](https://snyk.io/test/npm/hexo-yam)
 [![Greenkeeper badge](https://badges.greenkeeper.io/curbengh/hexo-yam.svg)](https://greenkeeper.io/)
 
-Yet Another Minifier for Hexo. Minify and compress HTML, JS, CSS and SVG. XML, JSON and [many more](https://github.com/curbengh/hexo-yam/blob/ba77db0094a7c07ea9f70f010bfc15541d4105ca/index.js#L64) are also compressed. Support gzip and [brotli](https://en.wikipedia.org/wiki/Brotli) [compressions](https://en.wikipedia.org/wiki/HTTP_compression).
+Yet Another Minifier for Hexo. Minify and compress HTML, JS, CSS, SVG, XML and JSON. [Other files](https://github.com/curbengh/hexo-yam/blob/ba77db0094a7c07ea9f70f010bfc15541d4105ca/index.js#L64) are also compressed. Support gzip and [brotli](https://en.wikipedia.org/wiki/Brotli) [compressions](https://en.wikipedia.org/wiki/HTTP_compression).
 
 
 ## Table of contents
@@ -22,6 +22,7 @@ Yet Another Minifier for Hexo. Minify and compress HTML, JS, CSS and SVG. XML, J
 - [Gzip](#gzip)
 - [Brotli](#brotli)
 - [XML](#xml)
+- [JSON](#json)
 - [Globbing](#globbing)
 - [HTTP Compression](#http-compression)
 
@@ -194,6 +195,8 @@ minify:
 
 ## XML
 
+Remove whitespaces in xml.
+
 ``` yaml
 minify:
   xml:
@@ -210,6 +213,25 @@ minify:
 - **removeComments** - Remove [comments](https://developer.mozilla.org/en-US/docs/Web/XML/XML_introduction) in xml. Defaults to `true`.
 - **globOptions** - See [globbing](#globbing) section.
 
+## JSON
+
+Remove whitespaces in json.
+
+``` yaml
+minify:
+  json:
+    enable: false
+    include:
+      - '*.json'
+      - '!*.min.json'
+```
+- **enable** - Enable the plugin. Defaults to `false`.
+- **priority** - Plugin's priority. Defaults to `10`.
+- **verbose** - Verbose output. Defaults to `false`.
+- **include** - Include files. Support [wildcard](http://www.globtester.com/) pattern(s) in a string or array.
+  - Exclude `*.min.json` by default.
+- **globOptions** - See [globbing](#globbing) section.
+
 ## Globbing
 
 Use "globOptions" to customise how glob patterns match files. Refer to [micromatch](https://github.com/micromatch/micromatch#options) for available options.

index.js

@@ -67,6 +67,13 @@ const xmlDefault = {
   removeComments: true,
   globOptions: { basename: true }
 }
+const jsonDefault = {
+  enable: false,
+  priority: 10,
+  verbose: false,
+  include: ['*.json', '!*.min.json'],
+  globOptions: { basename: true }
+}
 
 hexo.config.minify = Object.assign(minifyDefault, hexo.config.minify)
 hexo.config.minify.html = Object.assign(htmlDefault, hexo.config.minify.html)
@@ -76,6 +83,7 @@ hexo.config.minify.svg = Object.assign(svgDefault, hexo.config.minify.svg)
 hexo.config.minify.gzip = Object.assign(gzipDefault, hexo.config.minify.gzip)
 hexo.config.minify.brotli = Object.assign(brotliDefault, hexo.config.minify.brotli)
 hexo.config.minify.xml = Object.assign(xmlDefault, hexo.config.minify.xml)
+hexo.config.minify.json = Object.assign(jsonDefault, hexo.config.minify.json)
 
 if (hexo.config.minify.enable === true) {
   const filter = require('./lib/filter')
@@ -86,6 +94,7 @@ if (hexo.config.minify.enable === true) {
   hexo.extend.filter.register('after_generate', filter.gzipFn, hexo.config.minify.gzip.priority)
   hexo.extend.filter.register('after_generate', filter.brotliFn, hexo.config.minify.brotli.priority)
   hexo.extend.filter.register('after_generate', filter.minifyXml, hexo.config.minify.xml.priority)
+  hexo.extend.filter.register('after_generate', filter.minifyJson, hexo.config.minify.json.priority)
 }
 
 module.exports = {
@@ -96,5 +105,6 @@ module.exports = {
   svgDefault,
   gzipDefault,
   brotliDefault,
-  xmlDefault
+  xmlDefault,
+  jsonDefault
 }

lib/filter.js

@@ -253,6 +253,36 @@ function minifyXml () {
   }))
 }
 
+function minifyJson () {
+  const hexo = this
+  const options = hexo.config.minify.json
+  if (options.enable === false) return
+
+  const { route } = hexo
+  const routeList = route.list()
+  const { globOptions, include, verbose } = options
+
+  return Promise.all((match(routeList, include, globOptions)).map((path) => {
+    return new Promise((resolve, reject) => {
+      const assetPath = route.get(path)
+      let assetTxt = ''
+      assetPath.on('data', (chunk) => (assetTxt += chunk))
+      assetPath.on('end', () => {
+        if (assetTxt.length) {
+          try {
+            const result = JSON.stringify(JSON.parse(assetTxt))
+            if (verbose) logFn.call(this, assetTxt, result, path, 'json')
+            resolve(route.set(path, result))
+          } catch (err) {
+            reject(new Error(err))
+          }
+        }
+        resolve()
+      })
+    })
+  }))
+}
+
 module.exports = {
   minifyHtml,
   minifyCss,
@@ -260,5 +290,6 @@ module.exports = {
   minifySvg,
   gzipFn,
   brotliFn,
-  minifyXml
+  minifyXml,
+  minifyJson
 }

test/json.test.js

@@ -0,0 +1,188 @@
+/* eslint-env jest */
+'use strict'
+
+const Hexo = require('hexo')
+const hexo = new Hexo(__dirname)
+global.hexo = hexo
+const { jsonDefault } = require('../index')
+const jsonFn = require('../lib/filter').minifyJson.bind(hexo)
+const path = 'foo.json'
+const input = '{\n\t"vitae": "hendrerit",\n\t"tristique": [\n\t\t"primis",\n\t\t"quam"\n\t]\n}'
+const expected = '{"vitae":"hendrerit","tristique":["primis","quam"]}'
+
+describe('xml', () => {
+  beforeEach(() => {
+    hexo.config.minify.json = Object.assign({}, jsonDefault)
+    // plugin is disabled by default
+    hexo.config.minify.json.enable = true
+    hexo.route.set(path, input)
+  })
+
+  afterEach(() => {
+    const routeList = hexo.route.list()
+    routeList.forEach((path) => hexo.route.remove(path))
+  })
+
+  test('default', async () => {
+    await jsonFn()
+
+    const output = hexo.route.get(path)
+    let result = ''
+    output.on('data', (chunk) => (result += chunk))
+    output.on('end', () => {
+      expect(result).toBe(expected)
+    })
+  })
+
+  test('disable', async () => {
+    hexo.config.minify.json.enable = false
+    const result = await jsonFn()
+
+    expect(result).toBeUndefined()
+  })
+
+  test('option - verbose', async () => {
+    hexo.config.minify.json.verbose = true
+    hexo.log.log = jest.fn()
+    await jsonFn()
+
+    expect(hexo.log.log.mock.calls[0][0]).toContain(`json: ${path}`)
+  })
+
+  test('invalid input', async () => {
+    hexo.route.set(path, 'foo')
+    try {
+      await jsonFn()
+    } catch (err) {
+      expect(err.message).toContain('SyntaxError')
+    }
+  })
+
+  test('empty file', async () => {
+    hexo.route.set(path, '')
+    const result = await jsonFn()
+
+    expect(result).toBeDefined()
+    expect(result[0]).toBeUndefined()
+  })
+
+  test('include - exclude *.min.json by default', async () => {
+    const path = 'foo.min.json'
+    hexo.route.set(path, input)
+    await jsonFn()
+
+    const output = hexo.route.get(path)
+    let result = ''
+    output.on('data', (chunk) => (result += chunk))
+    output.on('end', () => {
+      expect(result).toBe(input)
+    })
+  })
+
+  test('include - basename', async () => {
+    hexo.config.minify.json.include = 'bar.json'
+    const path = 'foo/bar.json'
+    hexo.route.set(path, input)
+    await jsonFn()
+
+    const output = hexo.route.get(path)
+    let result = ''
+    output.on('data', (chunk) => (result += chunk))
+    output.on('end', () => {
+      expect(result).toBe(expected)
+    })
+  })
+
+  test('include - slash in pattern', async () => {
+    hexo.config.minify.json.include = '**/lectus/**/*.json'
+    const path = 'eleifend/lectus/nullam/dapibus/netus.json'
+    hexo.route.set(path, input)
+    await jsonFn()
+
+    const output = hexo.route.get(path)
+    let result = ''
+    output.on('data', (chunk) => (result += chunk))
+    output.on('end', () => {
+      expect(result).toBe(expected)
+    })
+  })
+
+  test('include - basename + slash', async () => {
+    hexo.route.remove(path)
+
+    const paths = [
+      'lorem/ipsum/dolor.json',
+      'gravida/sociis/erat/ante.json',
+      'aptent/elementum.json',
+      'felis/blandit/cursus.json'
+    ]
+    hexo.config.minify.json.include = [
+      'dolor.json',
+      '**/sociis/**/*.json'
+    ]
+
+    paths.forEach((inpath) => {
+      hexo.route.set(inpath, input)
+    })
+    await jsonFn()
+
+    const minPaths = paths.slice(0, 2)
+    const unminPaths = paths.slice(2)
+
+    minPaths.forEach((inpath) => {
+      const output = hexo.route.get(inpath)
+      let result = ''
+      output.on('data', (chunk) => (result += chunk))
+      output.on('end', () => {
+        expect(result).toBe(expected)
+      })
+    })
+
+    unminPaths.forEach((inpath) => {
+      const output = hexo.route.get(inpath)
+      let result = ''
+      output.on('data', (chunk) => (result += chunk))
+      output.on('end', () => {
+        expect(result).toBe(input)
+      })
+    })
+  })
+
+  test('include - reverse pattern + basename disabled', async () => {
+    hexo.route.remove(path)
+
+    const paths = [
+      'lorem/ipsum/dolor.json',
+      'gravida/sociis/erat/ante.json',
+      'aptent/elementum.json',
+      'felis/blandit/cursus.json'
+    ]
+    hexo.config.minify.json.include = [
+      '!dolor.json'
+    ]
+    hexo.config.minify.json.globOptions = {
+      basename: false
+    }
+
+    paths.forEach((inpath) => {
+      hexo.route.set(inpath, input)
+    })
+    await jsonFn()
+
+    paths.forEach((inpath) => {
+      const output = hexo.route.get(inpath)
+      let result = ''
+      output.on('data', (chunk) => (result += chunk))
+      output.on('end', () => {
+        expect(result).toBe(expected)
+      })
+    })
+  })
+
+  test('include - empty route', async () => {
+    hexo.route.remove(path)
+
+    const result = await jsonFn()
+    expect(result.length).toBe(0)
+  })
+})