Google clousure compiler

[cesco69]

Prerequisites

• [X] I have written a descriptive issue title
• [X] I have searched existing issues to ensure the feature has not already been requested

🚀 Feature Proposal

The idea is compile the stringify method with https://www.npmjs.com/package/google-closure-compiler in ADVANCED mode (https://developers.google.com/closure/compiler/docs/api-tutorial3)

The main goal of google-closure-compiler is reduce the size of the script, but:

Some of the compiler's optimizations even decrease runtime. [...] Optimizations that reduce redundancies speed up the run time of code as well.

is something like this https://github.com/fastify/fast-json-stringify/pull/633

[jsumners]

This project is plain JavaScript. There isn't any need for compiling anything.

[cesco69]

This project is plain JavaScript. There isn't any need for compiling anything.

google-closure-compiler is a plain javascript minifier/optimizer

[jsumners]

I suggest providing some evidence that this would be an improvement/necessary. In my opinion, it will just complicate maintenance and debugging.

[nigrosimone]

this is just a try with terser (another javascript compressor/optimizer):

'use strict'

const fastJson = require('fast-json-stringify')
const { minify } = require("terser"); // nmp install terser

const stringify = fastJson({
  title: 'Example Schema',
  type: 'object',
  properties: {
    firstName: {
      type: 'string'
    },
    lastName: {
      type: 'string'
    },
    age: {
      description: 'Age in years',
      type: 'integer'
    },
    now: {
      type: 'string'
    },
    birthdate: {
      type: ['string'],
      format: 'date-time'
    },
    reg: {
      type: 'string'
    },
    obj: {
      type: 'object',
      properties: {
        bool: {
          type: 'boolean'
        }
      }
    },
    arr: {
      type: 'array',
      items: {
        type: 'object',
        properties: {
          str: {
            type: 'string'
          }
        }
      }
    }
  },
  required: ['now'],
  patternProperties: {
    '.*foo$': {
      type: 'string'
    },
    test: {
      type: 'number'
    },
    date: {
      type: 'string',
      format: 'date-time'
    }
  },
  additionalProperties: {
    type: 'string'
  }
}, {mode: 'standalone'})

const fs = require('fs')
const path = require('path')

minify(stringify).then(result => {
  

  fs.writeFileSync(path.join(__dirname, 'terser.js'), result.code, {encoding: 'utf-8'})
  fs.writeFileSync(path.join(__dirname, 'raw.js'), stringify, {encoding: 'utf-8'})


  const tfjs = require('./terser')
  const rfjs = require('./raw')

  const RUN = 5000;
  const OBJ = {
    firstName: 'Matteo',
    lastName: 'Collina',
    age: 32,
    now: new Date(),
    reg: /"([^"]|\\")*"/,
    foo: 'hello',
    numfoo: 42,
    test: 42,
    strtest: '23',
    arr: [{ str: 'stark' }, { str: 'lannister' }],
    obj: { bool: true },
    notmatch: 'valar morghulis',
    notmatchobj: { a: true },
    notmatchnum: 42
  };

  console.time('terser')
  for (let index = 0; index < RUN; index++) {
    tfjs(OBJ)
  }
  console.timeEnd('terser')

  console.time('raw')
  for (let index = 0; index < RUN; index++) {
    rfjs(OBJ)
  }
  console.timeEnd('raw')
})

result:

terser: 40.64ms
raw: 45.999ms