苹果im钱包下载安装|swc

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苹果im钱包下载安装|swc

作者：苹果im钱包下载安装

2024-03-13 06:15:23

Rust-based platform for the Web – SWC

-based platform for the Web – SWCSkip to contentSWCSpeedy Web CompilerDocsDocsPlaygroundPlaygroundBlogBlogGitHubGitHub (opens in a new tab)DocsGetting StartedUsage@swc/cli@swc/core@swc/wasm@swc/jestswc-loaderBundlingConfiguration.swcrcCompilationSupported BrowsersModulesMinificationBundlingPluginSelecting swc_coreECMAScriptGetting startedCheatsheetPublishingSponsorsBenchmarksMigrating from BabelMigrating from TscPlaygroundTry SWCBlogPerformance Comparison of SWC and BabelIntroducing SWC 1.0light

SWC

Rust-based platform for the Web

SWC is an extensible Rust-based platform for the next generation of fast developer tools. It's used by tools like Next.js, Parcel, and Deno, as well as companies like Vercel, ByteDance, Tencent, Shopify, and more.

SWC can be used for both compilation and bundling. For compilation, it takes JavaScript / TypeScript files using modern JavaScript features and outputs valid code that is supported by all major browsers.

SWC is 20x faster than Babel on a single thread and 70x faster on four cores.

Get Started · Playground · Blog · Rustdocs (opens in a new tab) · GitHub Repository (opens in a new tab) · Donate (opens in a new tab)

Overview

SWC can be downloaded and used as a pre-built binary, or built from source. Currently, the following binaries are provided:

Mac (Apple Silicon)

Mac (x64)

Linux (x86_64)

Linux (aarch64)

Linux (armv7)

Alpine Linux (also install @swc/core-linux-musl)

Android (aarch64)

Windows (win32-x64)

Windows (ia32)

Download prebuilt binaries

pnpmnpmyarnpnpm i -D @swc/cli @swc/core

Transpile JavaScript file and emit to stdout

npx swc ./file.js

Features

SWC is designed to be extensible. Currently, there is support for:

Compilation

Bundling (swcpack, under development)

Minification

Transforming with WebAssembly

Usage inside webpack (swc-loader)

Improving Jest performance (@swc/jest)

Custom Plugins

Learn more.

Community

SWC is created by kdy1dev (opens in a new tab).

Follow @kdy1dev (opens in a new tab) on Twitter for future project updates.

Feel free to join the discussions on GitHub (opens in a new tab)!lightPowered

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Facilitating students’ fuller appreciation of their potentials, strengths, resources and sense of agency

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Psycho-education Services

This is the preventive component of the program. It aims to facilitate students’ personal empowerment and holistic development and to help promote college success through academic adjustment; and achievement, prevention activities, information generation and sharing, advocacy, as well as wellness, life skills and interests enhancement.

Career Services

This centers on career planning, development and education of students. This hopes to facilitate students’ systematic assessment of their attitudes, interests, personality, needs, values, skills, personal mission or goals, their work or career options, as well as their decision as to which career path to take.

Counseling and Therapy Services

This is the responsive or intervention component of the program. The services are designed to meet the immediate personal, social, emotional, physical or psychological needs and concerns of individual students. Such needs may require counseling/therapy, crisis intervention, consultation, or referrals which may be done individually or in groups.

Testing and Inventory Services

This is a built-in service delivery, which focuses on psychological assessment/testing of students as need arises. Complementing the other services, this aims to assist students understand, monitor, manage and plan their developments in terms of their goals, values, adjustments, abilities, interests and competencies, achievements and aptitudes.

Let's Get In Touch!

Student Wellness Center

122 Gregoria Montoya Hall

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Cavite, Philippines 4115

Cavite +63 (46) 481.1900 3019 local 3054

Manila +63 (2) 779.5180

jrcatibog@dlsud.edu.ph

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Sustainable Waste Management in Livable Communities (1)Sustainable Waste Management in Livable Communities (1)

23 Years of Ecological Solid Waste Management- The Celebration of R.A. 9003

0O4A20640O4A2039DSC01499sen-legardasen-villarDSC01618DSC01635DSC023840O4A2008DSC01395DSC014040O4A20940O4A2018DSC01428DSC01835DSC01700DSC01002DSC01016DSC01019DSC01069DSC01078DSC01160DSC01212DSC01233DSC01374DSC01569DSC01565DSC01228DSC01116DSC00938DSC00921DSC01668DSC016810O4A2067DSC01702DSC01707DSC01712DSC01721DSC01741DSC01764DSC01779DSC01808DSC01826DSC01845DSC01888DSC01913DSC01928DSC01946DSC01952DSC02010DSC02014DSC02019DSC02022DSC02025DSC02044DSC02052DSC02085DSC02115DSC02120DSC02140DSC02150DSC02191DSC02195DSC02213DSC02223DSC02254DSC02264DSC02295DSC02316DSC02327DSC02334DSC02352DSC02356DSC02370

LGU 10-Year SWM Plan Junk Shops and Recycling Facilities Solid Waste Generation LGU Best Practices WACS Manual NPOA-ML Documents

Operational Sanitary Landfills Sanitary Landfill Designs Recipients of SWM Equipment NEAP DocumentsManagement of COVID-19 RelatedHealth Care Wastes

Sustainable Waste Management in Livable Communities

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Marine Litter Learning Kit:A Facilitator’s GuideGreen Choice PhilippinesAwarded Eco-products

SWM Materials for DepEdby Nestlé and NSWMC2006 IPCC Guidelines for NationalGreenhouse Gas Inventories for theWaste SectorTechnical Cooperation Project (TCP) Outputs

Empowering Action through the 4TH BROWN BAG SESSION on Strategies in the Localization of the National Plan of Action for the Prevention, Reduction and Management of Marine Litter (NPOA-ML)

Posted on February 6, 2024

The 4th Brown Bag Session took place on a Friday of January 19, 2024, at the DENR Social Hall. The discussion centered on strategies for localization of the National Plan of Action for the Prevention, Reduction, and Management of Marine Litter (NPOA-ML), hosted by the Solid Waste Management Division. Moderated by National Solid Waste Management continue reading : Empowering Action through the 4TH BROWN BAG SESSION on Strategies in the Localization of the National Plan of Action for the Prevention, Reduction and Management of Marine Litter (NPOA-ML)

Commemorating 23 Years of Ecological Solid Waste Management- The Celebration of R.A. 9003

Posted on February 2, 2024

The 23rd signing anniversary of the Republic Act 9003, also known as the Ecological Solid Waste Management Act of 2000, was commemorated at the Park Inn by Radisson Hotel, North Edsa, Quezon City on January 30, 2024; with the theme: Sustainable Waste Management in Livable Communities, advocating for Zero Waste to Philippine Waters by 2040. continue reading : Commemorating 23 Years of Ecological Solid Waste Management- The Celebration of R.A. 9003

Zero Waste Month: KALINISAN Sa Bagong Pilipinas

Posted on January 10, 2024

KALINISAN Sa Bagong Pilipinas: Transforming Communities through Clean-Up Initiatives In an effort to foster a cleaner and a more sustainable environment, the administration of Bagong Pilipinas has initiated a transformative campaign aimed to cultivate a culture of cleanliness and responsibility across all sectors of society and government units. Led by the Department of the Interior continue reading : Zero Waste Month: KALINISAN Sa Bagong Pilipinas

#TrashFreeUndas

Posted on October 31, 2023

As Filipinos flock memorial parks and public cemeteries in observance of Undas 2023, the Department of Environment and Natural Resources-Environmental Management Bureau reminds the public to maintain cleanliness and use reusable or recyclable materials to generate less solid waste during All Saints’ Day and All Souls’ Day this year. EMB also encourages cemetery administrators to continue reading : #TrashFreeUndas

2023 International Coastal Cleanup Day: PH joins anew the global effort to protect oceans

Posted on September 17, 2023

The Philippines joins thousands of volunteers in over 150 countries, continuing the country’s active participation in the International Coastal Cleanup (ICC) Day, a global initiative dedicated to addressing ocean pollution through beach and waterway cleanups held every third Saturday of September. Now on its 37th year, the Philippines has been participating in the ICC since continue reading : 2023 International Coastal Cleanup Day: PH joins anew the global effort to protect oceans

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Maria Antonia Yulo Loyzaga DENR Secretary Atty. Juan Miguel T. Cuna,CESO IUndersecretary for Field Operations for Luzon, Visayas and EnvironmentAtty. Daniel Darius M. Nicer,CESO IIAssistant Secretary for Enforcement, Solid Waste Management and Local Government Units ConcernsEngr. Gilbert C. Gonzales,CESO IIIDirector, EMBIn concurrent capacity asOIC Assistant Secretary for Field OperationsEngr. Esperanza A. SajulOIC Assistant Director, EMBIn concurrent capacity as Chief, Environmental Impact Assessment and Management Division Juvinia P. Serafin, MDMOIC Chief,Solid Waste Management Division

DENR Administrative Order No. 2023-02Implementing Rules and Regulations of Republic Act No. 11898NSWMC Resolution No. 1517Resolution Endorsing the Draft Implementing Rules and Regulations of the Extended Producer Responsibility Act of 2022Republic Act No. 11898An Act Institutionalizing the Extended Producer Responsibility on Plastic Waste, Amending for this Purpose Rebuplic Act No. 9003, Otherwise known as the "Ecological Solid Waste Management Act of 2000"NSWMC Resolution No. 1469Resolution Enjoining the Department of Transportation (DOTr) to install

Yellow Bins/Yellow Bags in all Transport Vehicles in the Aviation, Maritime, and Railways Sectors for the Proper Storage of the Generated COVID-19 Related Waste while in TransitNSWMC Resolution No. 1468Resolution to Strengthen the Enforcement of the Provisions of R.A. No. 9003 on Open Burning of Municipal Solid Wastes Including Agricultural WastesNSWMC Resolution No. 1452Resolution Adopting the Total Solid Waste Management Solution to Optimize Waste Recovery and Utilization in the Sanitary Landfills Prior to Disposal

NSWMC Resolution No. 1441Resolution Adopting the National Plan of Action for the Prevention, Reduction and Management of Marine Litter (NPOA-ML)

NSWMC Resolution No. 1429Resolution Enjoining all National Government Agencies to Provide Yellow

Bins in their respective premises for the proper storage of Household Health Care Wastes and to Coordinate with their respective Local Government Units for the Collection, Transport, Treatment and Disposal of such Wastes

NSWMC Resolution No. 1428Resolution Declaring the Plastic Softdrink Straw and Plastic Coffee Stirrer as Non-Environmentally Acceptable ProductsNSWMC Resolution No. 1364Resolution Adopting the Interim Guidelines on the Management of COVID-19 Related Health Care Wastes

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Social Welfare Council | Conscience as witness let us serve with thought, word and deed

Welcome to SWCCheck EmailCitizen's CharterDownloadsOld Website English Nepali Social Welfare Council "Conscience as witness let us serve with thought, word and deed"HomeAbout Us About Social Welfare CouncilSWC Information BulletinSWC OrganogramCouncil BoardStaff Contact InformationDepartments & Funds Finance AdministrationGeneral AdministrationMonitoring and EvaluationPlanning & ProgramNational Senior Citizen FundNational Health FundNational Disabled FundPolicy & Guideline Social Welfare Act 2049SWC Regulation 2049SWC Policy and Programme, 2077Guideline for NGO AffiliationGuideline for NGO ApprovalGuideline for PA AppraisalGuideline for GA, Service & FacilitationGuideline for Monitoring & EvaluationProgram Anumodan FormatResources List of NGOs affiliated with SWCProjects of INGOSNGO/ INGOs ChartsSWC NGOs Getting ApprovalAnnual Progress ReportGalleryUpdatesContactsDevelopment JobsEarthquake/ Covid Response Covid UpdatesProposal/ Reporting FormatEmergency Fund Utilization Format SWC Policy and Programme, 2077 समाज कल्याण परिषद् बाट प्रदान गरिने सेवा तथा अन्य विषयहरुमा गुनासाे, सल्लाह, सुझाव, जानकारी आदि भएमा hello_swc@swc.org.np इमेल ठेगानामा सम्पर्क गर्न सक्नुहुनेछ । Previous Next IntroductionGovernment of Nepal has established Social Welfare Council under Social Welfare Act, 2049 (1992) to provide for the Social Welfare by means of different activities relating to the social welfare work, to support the overall development of the country may operate the social welfare programme through the concerned Ministry and Social organizations and institutions.Special Programme relating to social welfare:Government of Nepal may operate special Programmes, relating to the social welfare activity and social service, in the following matters;(a) To serve interest and render welfare to the children, old age, helpless or disabled people.(b) To foster participation in development and to promote and protect the welfare, rights and interest of the women.(c) To rehabilitate and help to lead a life of dignity to the victims of social mischiefs and to juvenile delinquency, drug addicts and similar people involved in other kind of addictions.(d) To help to lead a life with dignity to the jobless, poor and illiterate people.Read More Search NGOsLike us on Facebook Highlights COVID responses by NGOs in each province NGO and INGO Details FY 78-79 SWC Officials Bhagbati Chaudhary Minister, Ministry of Women, Children and Senior Citizen and Chairperson, Social Welfare CouncilVacant Vice-Chairperson Mr. Binaya Lama Treasurer Mr. Manoj Bhatta Member Secretaryms@swc.org.np Council Board NoticesNews COVID responses by NGOs in each province आशयपत्र (EoI) पेश गर्ने सम्बन्धी सूचना नेपाल सरकारको सम्पत्ति शुद्धिकरण तथा आतंकवादी क्रियाकलापमा बित्तिय लगानी निवारण सम्बन्धी राष्ट्रिय रणनीति तथा कार्ययोजना (२०७६-२०८१) मा गृह मन्त्रालयको Websiteमा रहेको प्रतिबन्धित व्यक्ति वा समूहको सूची आशयपत्र (EoI) सम्बन्धी सार्वजनिक सूचना (प्रकाशित मिति २०८०/१०/१२) Notice for Shortlisted Consulting Firms/Companies मुद्दती खाता खोल्ने सम्बन्धी सूचना भूकम्प पिडित व्यक्तिहरुको राहत, उद्धार तथा पुर्नस्थापन सम्बन्धमा मिति २०८०-०८-१३ गतेको बसेको बैठक बाट पारित निर्णय सम्बन्धि जानकारी Notice for Letter of Intent (LOI) सामाजिक संघसंस्थाहरूलाई अत्यन्त जरूरी सूचना भूकम्प पिडित व्यक्तिहरुको राहत, उद्धार तथा पुर्नस्थापन सम्बन्धमा मिति २०८०-०८-१३ गतेको बसेको बैठक बाट पारित निर्णय सम्बन्धि जानकारी सूचनाको हक सम्बन्धी ऐन, २०६४ को दफा ५ को उपदफा (३) र नियमावलीको नियम ३ बमोजिम समाज कल्याण परिषद्सँग सम्बन्धित २०७६ मङ्गसिर देखि २०७६ फागुन मसान्तसम्ममा सम्पादित प्रमुख क्रियाकलापहरुको प्रगति विवरण सूचनाको हक सम्बन्धी ऐन, २०६४ को दफा ५ को उपदफा (३) र नियमावलीको नियम ३ बमोजिम समाज कल्याण परिषद्सँग सम्बन्धित २०७६ श्रावण देखि २०७६ कार्तिक मसान्तसम्ममा सम्पादित प्रमुख क्रियाकलापहरुको प्रगति विवरण Circular for NGOs and INGOs (परिपत्र सम्बन्धि सूचना) Success Story कोरोना भाइरस (कोभिड १९) महामारीको समयमा समाज कल्याण परिषद्को भूमिकाकोभिड १९ को विश्वव्यापी महामारीको रोकथाम नियन्त्रण तथा प्रतिकार्यका लागि नेपाल सरकारले २०७६ चैत्र ११ गतेदेखि लकडाउन सुरु ग¥यो । त्यसलगत्तै समाज कल्याण परिषद्ले नेपालमा कार्यरत राष्ट्रिय तथा अन्तर्राष्ट्रिय गैरसरकारी संस्थाहरुको काम कारबाहीलाई थप प्रभावकारी बनाउँदै वैदेशिक सहयोगलाई छिटो छरितो र... Full Story » Contact UsCentral OfficeHariharbhawan,Lalitpur, NepalTel.: +977-01-5555495 | 5555448 | 5555494Post Box No. 2948Email: info@swc.org.npURL: www.swc.org.npFor NGO Affiliation and RenewalCoordination Section, Bhrikutimandap, KathmanduTel: +977-01- 5327084 LinksMinistry of Women, Children and Senior CitizenOffice of Prime Minister and Council of MinistersOffice of President of NepalMinistry of Education, Science and TechnologyMinistry of FinanceNational Planning CommissionMinistry of Agriculture and Livestock Development Spokesperson Mr. Sanjay Kumar Mallik9851187662 , Email : infoofficer@swc.org.np Information Officer , Acting Director © 2019 Swc-Social Welfare Council Nepal | समाज कल्याण परिषद् Design and Developed By Closeone Technology

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Sabong WorldWide - The No.1 in the Philippines Come Play Now!..

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WELCOME ONSABONG WORLDWIDE

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Sabong worldwide or cockfighting is a popular blood sport where two roosters are placed in a ring to fight until one of them is incapacitated or dead. This practice has been around for centuries and is still prevalent in many parts of the world, including the Philippines, Mexico, and parts of Southeast Asia.

Sabong enthusiasts value the sport for its competitive and entertainment aspects, as well as its potential for monetary gain. Some potential meta keywords and keywords for this topic could include: Sabong, cockfighting, blood sport, cultural traditions, entertainment, controversy, legality, competition, monetary gain.More About Us

Sabong or cockfighting continues to be a popular and controversial practice to this day. Despite being banned or restricted in many countries, it remains deeply ingrained in the cultural traditions of others, particularly in Southeast Asia and parts of Latin America. In the Philippines, for example, deeply rooted pastime that is often associated with rural life. Above all of the Sabong Website Out There We are the best.

However, animal welfare advocates continue to push for its abolition, citing the cruelty and exploitation of the birds involved. The debate surrounding sabong remains highly charged, with both proponents and opponents holding strong opinions on the issue.

Making of An Account

There are several casinos and Online websites all over the world, but what makes Sabong Worldwide unique? Unlike other sites, Sabong Worldwide has a very easy registration process. Only a few bits of information are required to set up an account.

A Refferal IDUsernamePassword

Because it is the most vital information, a contact number must constantly be checked and confirmed accurately. Sabong worldwide Transaction receipts and codes are given to each player’s contact number to guarantee everyone’s safety! Be sure to enter your actual contact information to avoid difficulties. As a result Afterwards.

Who introduced cockfighting?

The sport Sabong worldwide was popular in ancient times in India, China, Persia, and other Eastern countries and was introduced into Greece in the time of Themistocles (c. 524–460 bc). The sport spread throughout Asia Minor and Sicily.

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Getting Started – SWC

ing Started – SWCSkip to contentSWCSpeedy Web CompilerDocsDocsPlaygroundPlaygroundBlogBlogGitHubGitHub (opens in a new tab)Getting StartedUsage@swc/cli@swc/core@swc/wasm@swc/jestswc-loaderBundlingConfiguration.swcrcCompilationSupported BrowsersModulesMinificationBundlingPluginSelecting swc_coreECMAScriptGetting startedCheatsheetPublishingSponsorsBenchmarksMigrating from BabelMigrating from TscDocsGetting StartedInstallationSupported BinariesUsage@swc/cli@swc/core@swc/wasm@swc/jestswc-loaderBundlingConfiguration.swcrcCompilationSupported BrowsersModulesMinificationBundlingPluginSelecting swc_coreECMAScriptGetting startedCheatsheetPublishingSponsorsBenchmarksMigrating from BabelMigrating from TscPlaygroundTry SWCBlogPerformance Comparison of SWC and BabelIntroducing SWC 1.0lightOn This PageInstallationSupported BinariesQuestion? Give us feedback → (opens in a new tab)Edit this page on GitHubDocsGetting StartedGetting Started

Installation

The easiest way to try SWC is using the Playground.

Otherwise, run the following to download pre-built binaries:

pnpmnpmyarnpnpm add -D @swc/cli @swc/core

Then, you can transpile your first file and emit to stdout:

npx swc ./file.js

Supported Binaries

SWC can be downloaded and used as a pre-built binary, or built from source. Currently, the following binaries are provided:

Mac (Apple Silicon)

Mac (x64)

Linux (x86_64)

Linux (aarch64)

Linux (armv7)

Alpine Linux (also install @swc/core-linux-musl)

Android (aarch64)

Windows (win32-x64)

Windows (ia32)

@swc/clilightPowered

Why you should use SWC (and not Babel) - LogRocket Blog

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2020-06-03

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#babel

Kasra Khosravi

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Jun 3, 2020 ⋅ 7 min read

Why you should use SWC (and not Babel)

Kasra Khosravi

Founder at FeedbackOnSite.co.

Introducing Galileo AI

LogRocket’s Galileo AI watches every session, surfacing impactful user struggle and key behavior patterns.

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What is Babel?

Babel is a tool to help us transpile newer versions of JavaScript code such as ES6 into older versions of JavaScript — it even helps you transpile TypeScript.

Babel reads the source code based on the configs you define for it and compiles newer JavaScript features such as arrow functions or optional chaining. This happens with Babel’s three major tools:

First, Babel’s parser takes the JavaScript code and converts it to an Abstract Syntax Tree (AST) which is the structure of the source code understandable by the computer

Next, Babel’s traverser takes the AST, explores it and modify it to the intended code we defined in our Babel configs

Lastly, Babel’s generator will translate the modified AST back to the regular code

Source: https://www.sitepoint.com/understanding-asts-building-babel-plugin/

Babel’s alternative (written in Rust)

SWC is also a transpiler for JavaScript, it is written in Rust and is much faster than Babel. Rust is known for its performance and reliability and has encouraged many businesses to rewrite partial or full parts of their code with it. For example:

Firefox has decided to rewrite its CSS renderer called Quantum CSS and gained substantial performance improvement

Tilde rewrote certain parts of their Java HTTP endpoints in Rust and gained great performance increase by reducing memory usage from 5GB to 50MB

One of the reasons Rust is so performant is its way of handling garbage collection which is a memory management approach to free up memory resources by data objects that no longer have use for them. Since Rust decides which memory resources are no longer necessary at compile time and does not have to run continuously, processing time decreases while performance gains increase.

As we all know, code transpiling is an expensive process and that’s why having a transpiler written in Rust can be much more performant. We are gonna explore this further, but first, we should determine if we need a transpiler:

Why do we even need a transpiler?

There are cases where the usage of a transpiler might not be necessary:

If you are building a simple project that mostly relies on a well-supported version of JavaScript like ES3. For example, running this code will work on almost all of the browsers, so if your usage of JavaScript is mostly like this, you should be fine without a transpiler:

// we print it, but we don't agree with it

function saySomething (something) {

console.log(`${something}. But don't tell anyone.`);

}

saySomething("I don't like Javascript!");

If you are building a simple project that relies on newer versions of JavaScript like arrow functions, but the browsers you need to support also do support those new features. For example, running the below code in a newer version of Chrome (45+) should be fine:

// we print it, but we don't agree with it

const saySomething = something => {

console.log(`${something}. But don't tell anyone.`);

};

saySomething("I don't like Javascript!");

Other than these cases, the need for a transpiler in an application is necessary. Browsers use different types of JavaScript engines like V8 (Chrome), SpiderMonkey (Firefox), and Chakra (IE). This means that even with a standard JavaScript specification, the timing of getting standards in different browsers and the level of their support is varied extensively.

That is why we need a consistent handling of our JavaScript code across many different browsers, without the worry of breaking something or losing the chance of using new features.

Our reliance on transpilers is not only limited to converting ES6 or TypeScript to ES5; transpilers bring the future of JavaScript to us today and let us handle many cases of JavaScript conversion like ES2019. This is a very powerful tool for today’s JavaScript developers.

So we have established why we need transpilers. Now it is time to test SWC usage with a simple setup and later compare its relative performance and speed to Babel.

SWC usage

SWC can be installed as a package from NPM package manager.

First, start running this command in the root of your directory:

// use `cd` to go to the right directory and then run

mkdir swc_project

// initialize a package.json

npm init

// install swc core as well as its cli tool

npm install --save-dev @swc/core @swc/cli

By running this, we now have both the SWC core as well as the CLI. The core package will help us in our build setup, while the CLI package can be run with a command in the terminal.

As a first step, we focus on the CLI tool to transpile our JavaScript files. Imagining we have the below JavaScript file which exists in the root of directory:

// async.js

const fetch = require("node-fetch");

async function getData() {

let res = await fetch("https://jsonplaceholder.typicode.com/todos/1");

let json = await res.json();

console.log('data', json);

}

getData();

// result:

// ▶Object {userId: 1, id: 1, title: "delectus aut autem", completed: false}

You can run the below commands for transpilation against this file like this:

// running this command will emit the transpiled data to stdout

// and it will be printed out in the terminal

npx swc async.js

// running this will create a new file called `output.js`

// with the transpiled data

npx swc async.js -o output.js

// running this will create a new directory called `transpiledDir`

// and will transpile all th files in the original dir

npx swc src -d transpiledDir

Note — to see what the transpiled file looks like, you can use this SWC playground.

Now as a second step, we want to include SWC as a tool in our build system. For this one, we want to use Webpack as a more advanced and configurable builder.

For starters, let’s see how our package.json would look for a setup of Webpack and SWC. With this setup, we can run npm run-script build to let webpack build our package; additionally, we can run npm run-script start to let Webpack serve our application:

{

"name": "swc-project",

"version": "1.0.0",

"scripts": {

"test": "echo \"Error: no test specified\" && exit 1",

"build": "rm -rf ./dist && webpack",

"start": "webpack-dev-server"

"license": "MIT",

"devDependencies": {

"@swc/core": "^1.1.39",

"css-loader": "^3.4.0",

"html-loader": "^0.5.5",

"html-webpack-plugin": "^3.2.0",

"sass-loader": "^8.0.0",

"style-loader": "^1.1.1",

"swc-loader": "^0.1.9",

"webpack": "^4.41.4",

"webpack-cli": "^3.3.10",

"webpack-dev-server": "^3.10.1"

"dependencies": {

"node-fetch": "2.6.0",

"react": "^16.12.0",

"react-dom": "^16.12.0",

"regenerator-runtime": "^0.13.5"

}

Our above configuration for building and starting an application is stored in a webpack.config.js file, which will automatically be picked up by Webpack. There are a few things going on in this file:

output: We are setting the name and location for Webpack to output your bundles, assets, and files including all the transpiled files

devServer: We are serving our Webpack app through this config by telling Webpack where to serve the content from as well as defining a port to listen for requests on

HTMLWebpackPlugin: We are defining this plugin to make the process of serving our HTML file with Webpack bundles included easier

But the most important part of this config is the swc-loader, which allows us to transpile JavaScript files with .js or .jsx file extensions:

// global dependencies

const path = require('path');

const HTMLWebpackPlugin = require("html-webpack-plugin");

module.exports = {

mode: "development",

output: {

path: path.resolve(__dirname, './dist'),

filename: 'index_bundle.js'

devServer: {

contentBase: path.join(__dirname, 'dist'),

compress: true,

port: 9000

module: {

rules: [

{

test: /\.jsx?$/ ,

exclude: /(node_modules|bower_components)/,

use: {

// `.swcrc` in the root can be used to configure swc

loader: "swc-loader"

}

{

test: /\.html$/,

use: [

{

loader: "html-loader",

options: { minimize: true }

}

]

{

test: /\.scss/i,

use: ["style-loader", "css-loader", "sass-loader"]

}

]

plugins: [

new HTMLWebpackPlugin({

filename: "./index.html",

template: path.join(__dirname, 'public/index.html')

})

]

};

With swc-loader set up in our Webpack config, we have come halfway for transpiling our JavaScript files. However, we still need to instruct SWC on how to transpile our files. It turns out, SWC has a similar approach to Babel by defining a config file in the root directory called .swcrc . Let’s see what this config looks like for a project that wants to transpile TypeScript.

In this config, we are using the test config as a Regex to only match with files that have a .ts file extension. Additionally, with the jsx.parser config, we are instructing SWC which parser to use for the transpilation (could be typescript / ecmascript).

However, we still have more control over the syntax parsing by defining which options of the transpilation are intended for our use case. For example, in this example, we are interested in transpiling Typescript decorators and dynamic imports, but ignore transpiling files with .tsx file extension:

// .swcrc

{

"test": ".*.ts$",

"jsc": {

"parser": {

"syntax": "typescript",

"tsx": false,

"decorators": true,

"dynamicImport": true

}

Now, let’s imagine that we want to use React in our webpack SWC example above. As we know, in React we can use a certain file extension called .jsx for writing React components:

// App.jsx

// global dependencies

import React from 'react';

import ReactDOM from 'react-dom';

const App = () => {

return

My SWC App

;

};

ReactDOM.render(, document.querySelector("#root"));

Serving this file through Webpack needs the correct webpack loader which we already have and defined above. It also requires the right transpilation settings in .swcrc file. Now with this approach, we are using the latest features of modern JavaScript (ES2019) as well as supporting .jsx file when transpiling. Additionally, if we need extra transpilation settings for our React project, we have plenty of settings at hand:

// .swcrc

{

"jsc": {

"parser": {

"syntax": "ecmascript",

"jsx": true

}

Speed comparison between Babel and SWC

As we discussed before, the speed of a transpiler is critical since it is baked into the build process, and, for many developers, any time that can be saved in this area is precious. Let’s see how these two tools compare in terms of speed.

First, we compare them in an artificial way and that is running code transformation for Babel and SWC in a synchronous manner. As we know, JavaScript is single-threaded and it would be impossible to run heavy computations in an asynchronous way in a real-life application. But this would still give us an indicator of the speed comparison. Let’s see these benchmark comparisons run on a single core CPU (tests performed by the maintainer of SWC project):

Transform

Speed (operation/second)

Sample Runs

SWC (ES3)

616 ops/sec

Babel (ES5)

34.05 ops/sec

This indicates that even though with a more expensive process of ES3 transformation for SWC, the speed of SWC transpilation is evident compared to Babel.

Now, if we want to benchmark a more realistic scenario, we can run samples against await Promise.all(), which is a more expensive and real scenario for handling the operations in JavaScript. With this benchmark, the number of CPU cores and parallel computations come into play. In another benchmark that was run, two experiments were done. Both used a computer with 8 CPU cores with a parallelism of 4.

The first experiment ran with 4 promises:

Transform

Speed (operation/second)

Sample runs

SWC (ES3)

1704 ops/sec

Babel (ES5)

27.28 ops/sec

The second experiment ran with 100 promises:

Transform

Speed (operation/second)

Sample runs

SWC (ES3)

2199 ops/sec

Babel (ES5)

32 ops/sec

Note — if you are interested in running the tests yourself and compare these benchmarks, you can clone this repository and then run the following commands in terminal:

// clone and cd into the cloned repository

cd node-swc

// Node.js benchmark runner, modelled after Mocha and bencha, based on Benchmark.js.

npm i benchr -g

// run the multicore.js or any other benchmarks under /benches directory

benchr ./benches/multicore.js

The main thing we can spot in these numbers is that the performance of Babel is dropping in async operations as Babel works on an event loop. This is in contrast to SWC which runs on a worker thread and can nicely scale up with the number of CPU cores.

In general, we see a clear speed gap between the two tools, as SWC tends to be around 20 times faster than Babel on a single thread and CPU core basis while being around 60 times faster in a multi-core async operation process.

Conclusion

We have covered the basics of transpilers in this article together and compared two of the JavaScript transpilers based on setup, execution, and speed perspective. By doing this, we have learned that:

Their setup for the build workflow are similar

However, SWC has a significant speed advantage compared to Babel

So if you are using Babel and thinking about transitioning to gain faster build time, make sure to:

Check all the features that are already fully, partially or not supported by SWC

Check that your build system supports it (even though Webpack does, other tools like Parcel might not)

Having said that, the idea behind SWC sounds promising and we will all keep an eye on its progress.

Resources

https://www.reddit.com/r/programming/comments/a8i4ar/swc_superfast_alternative_for_babel/

https://stackoverflow.blog/2020/01/20/what-is-rust-and-why-is-it-so-popular/

https://medium.com/@rajithaeye/what-is-babel-8dcfdf84ea3e

https://scotch.io/tutorials/javascript-transpilers-what-they-are-why-we-need-them

https://github.com/swc-project/swchttps://hacks.mozilla.org/2017/08/inside-a-super-fast-css-engine-quantum-css-aka-stylo/

https://medium.com/@boolean/swc-super-fast-javascript-transpiler-written-in-rust-f8f436195cb8

https://medium.com/@pramonowang/transpilers-do-you-really-need-it-e9c63686e5fe

https://news.ycombinator.com/item?id=17175186

http://nicholasjohnson.com/blog/what-is-babel/https://www.sitepoint.com/understanding-asts-building-babel-plugin/

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@swc/cli – SWC

/cli – SWCSkip to contentSWCSpeedy Web CompilerDocsDocsPlaygroundPlaygroundBlogBlogGitHubGitHub (opens in a new tab)Getting StartedUsage@swc/cli@swc/core@swc/wasm@swc/jestswc-loaderBundlingConfiguration.swcrcCompilationSupported BrowsersModulesMinificationBundlingPluginSelecting swc_coreECMAScriptGetting startedCheatsheetPublishingSponsorsBenchmarksMigrating from BabelMigrating from TscDocsGetting StartedUsage@swc/cliUsageOptions@swc/core@swc/wasm@swc/jestswc-loaderBundlingConfiguration.swcrcCompilationSupported BrowsersModulesMinificationBundlingPluginSelecting swc_coreECMAScriptGetting startedCheatsheetPublishingSponsorsBenchmarksMigrating from BabelMigrating from TscPlaygroundTry SWCBlogPerformance Comparison of SWC and BabelIntroducing SWC 1.0lightOn This PageUsageOptions--filename (-f)--config-file--env-name--no-swcrc--ignore--only--watch (-w)--quiet (-q)--source-maps (-s)--source-map-target--source-file-name--source-root--out-file (-o)--out-dir (-d)--copy-files (-D)--include-dotfiles--config (-C)--sync--log-watch-compilation--extensions--strip-leading-pathsQuestion? Give us feedback → (opens in a new tab)Edit this page on GitHubDocsUsage@swc/cli@swc/cli

Usage

Run the following to download pre-built binaries:

pnpmnpmyarnpnpm i -D @swc/cli @swc/core

Then, you can transpile your files:

# Transpile one file and emit to stdout

npx swc ./file.js

# Transpile one file and emit to `output.js`

npx swc ./file.js -o output.js

# Transpile and write to /output dir

npx swc ./my-dir -d output

Options

--filename (-f)

Filename to use when reading from stdin. This will be used in source maps and errors.

npx swc -f input.js

--config-file

Path to a .swcrc file to use.

npx swc input.js --config-file .swcrc

--env-name

The name of the 'env' to use when loading configs and plugins. Defaults to the value of SWC_ENV, or else NODE_ENV, or else development.

npx swc input.js --env-name='test'

--no-swcrc

Whether or not to look up .swcrc files.

npx swc input.js --no-swcrc

--ignore

List of glob paths to not compile.

npx swc src --ignore **/*.test.js

--only

List of glob paths to only compile

Example:

npx swc src --only **/*.js

--watch (-w)

To automatically recompile files on changes, install chokidar:

npm i -D chokidar

Then, add the -w flag:

npx swc input.js -w

--quiet (-q)

Suppress compilation output.

npx swc input.js -q

--source-maps (-s)

Values: true|false|inline|both

npx swc input.js -s

--source-map-target

Define the file for the source map.

npx swc input.js -s --source-map-target input.map.js

--source-file-name

Set sources[0] on returned source map

--source-root

The root from which all sources are relative.

--out-file (-o)

Compile all input files into a single file.

npx swc input.js -o output.js

--out-dir (-d)

Compile an input directory of modules into an output directory.

npx swc src -d dist

--copy-files (-D)

When compiling a directory, copy over non-compilable files.

npx swc src --copy-files

--include-dotfiles

Include dotfiles when compiling and copying non-compilable files.

npx swc src --include-dotfiles

--config (-C)

Override a config from .swcrc file.

npx swc src -C module.type=amd -C module.moduleId=hello

--sync

Invoke swc synchronously. Useful for debugging.

npx swc src --sync

--log-watch-compilation

Log a message when a watched file is successfully compiled.

npx swc input.js --log-watch-compilation

--extensions

Use specific extensions.

--strip-leading-paths

Remove the leading directory (including all parent relative paths) when building the final output path. As an example it compiles all modules under src folder to dist folder, without create the src folder inside of dist.

npx swc src -d dist --strip-leading-pathsLast updated on January 28, 2024Getting Started@swc/corelightPowered

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苹果im钱包下载安装|swc

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Rust-based platform for the Web – SWC

SWC Portal

Solid Waste Management Division -

Social Welfare Council | Conscience as witness let us serve with thought, word and deed

GitHub - swc-project/swc: Rust-based platform for the Web

Sabong WorldWide - The No.1 in the Philippines Come Play Now!..

Getting Started – SWC

Why you should use SWC (and not Babel) - LogRocket Blog

My SWC App

Singapore Women’s and Children’s Medical Group (SWC Medical Group)

@swc/cli – SWC

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