Difference between TypeScript and ES6
TypeScript
TypeScript is an open-source, purely object-oriented programming language. It serves as a strongly typed superset of JavaScript, which compiles down to standard JavaScript. Developed and supported by Microsoft, it is distributed under the Apache 2 license. TypeScript does not execute directly in browsers; instead, it requires a compiler to transform the code into a JavaScript file. The source files for TypeScript carry a ".ts" extension. Any valid ".js" file can be utilized by simply renaming it to a ".ts" file. TypeScript represents the ES6 iteration of JavaScript, incorporating several additional features.
History of TypeScript
TypeScript was created by Anders Hejlsberg and made its public debut on October 1, 2012. Following two years of internal development at Microsoft, TypeScript version 0.9 was launched in 2013. The latest version available is TypeScript 3.4.5, which was released on April 24, 2019.
ECMAScript (ES) is a standardized scripting language specification established by ECMA International. It was designed to unify JavaScript. The ECMAScript scripting language encompasses numerous implementations, with JavaScript being the most widely utilized. Developers primarily leverage ECMAScript for client-side scripting on the World Wide Web (WWW).
The sixth iteration of the ECMAScript standard is known as ECMAScript 6 or ES6, which was subsequently rebranded as ECMAScript 2015. This version represents a significant upgrade to the JavaScript programming language, enabling the development of applications that are more complex. It introduces numerous features designed to facilitate large-scale software engineering. The most widely used ES6-compatible web browsers include Chrome and Firefox. A transpiler is responsible for transforming ES6 code into ES5, which is compatible with many browsers. TypeScript serves as one such transpiler. Other tools like Grunt, Gulp, and Babel also function as transpilers to compile the modules. Consequently, TypeScript is compatible with ES6.
History
JavaScript was launched in May 1995 by Brendan Eich. The original name, Mocha, was selected by Netscape founder Marc Andreessen, and it was subsequently changed to LiveScript. Concurrently, Sun Microsystems held the trademark for JavaScript. In December 1995, Netscape secured a trademark license and rebranded it as JavaScript.
Between 1996 and 1997, Netscape presented JavaScript to the ECMA standards body to establish a formal specification for the language. In June 1997, the ECMA Technical Committee 39 (TC39) was formed to further develop the language, ultimately issuing ECMA-262 Ed.1.
The initial official version of JavaScript, known as ECMAScript 1, was launched in June 1997. A year later, ECMAScript 2 was introduced, incorporating only slight modifications to align with the ISO standard for JavaScript. In December 1999, ECMAScript 3 was released, bringing a host of widely-used features to JavaScript. Later, in December 2009, ECMAScript, also referred to as ES6, was released and eventually rebranded as ECMAScript 2015.
TypeScript vs. ES6
| TypeScript | ES6 | |
|---|---|---|
| Definition | TypeScript is a free and open-source pure object-oriented programming language. It is developed and maintained by Microsoft. | ES6 is a version of ECMAScript (ES), which is a scripting language specification standardized by ECMA international. |
| Explanation | Typescript is to eradicate the development errors. | ES6 is comparatively more flexible in development time. |
| Data-Types | TypeScript supports all primitive data types. | ES6 does not support all data types. |
| Features | TypeScript contains features such as generics and type annotations, Inference, Enums, and Interfaces. | ES6 does not support these features. |
| Scope | Typescript has three scopes.Global ScopeClass ScopeLocal Scope | ES6 has two scopes.Global ScopeLocal Scope |
| Decision-Making | if Statementif-else Statementelse...if and nested if statementsswitch Statement | if Statementif-else StatementThe else- if ladder/nested if statements.switch?case Statement |
| Modules | TypeScript Modules are of two types:InternalExternal modules | We can classify the ES6 modules in two ways:Importing a moduleExporting a module |
Loop |
Typescript and ES6 both are having same loops.DefiniteIndefinite | Typescript and ES6 both are having same loops.DefiniteIndefinite |
| Why choose | The developers choose TypeScript:TypesafeJavaScript supersetPowerful type system, including generics & JS features.Aligned with ES development for compatibility.Structural, rather than nominal, subtyping.Compile-time errors.Starts and ends with JavaScript. | The developers choose ES6:ES6 code is shorter than traditional JSModule System StandardizedExtremely compactDestructuring Assignment |
| Company using | The list of companies which uses TypeScript are:SlackAsanaCircleCIIntuitSwat.ioAvocode | The list of companies which uses ES6 are:SlackStackShareeBayAsanaIntuitSwat.io |
- Global Scope
- Class Scope
- Local Scope
- Global Scope
- Local Scope
- if Statement
- if-else Statement
- else...if and nested if statements
- switch Statement
- if Statement
- if-else Statement
- The else- if ladder/nested if statements.
- switch?case Statement
- Internal
- External modules
- Importing a module
- Exporting a module
- Definite
- Indefinite
- Definite
- Indefinite
- Typesafe
- JavaScript superset
- Powerful type system, including generics & JS features.
- Aligned with ES development for compatibility.
- Structural, rather than nominal, subtyping.
- Compile-time errors.
- Starts and ends with JavaScript.
- ES6 code is shorter than traditional JS
- Module System Standardized
- Extremely compact
- Destructuring Assignment
- Slack
- Asana
- CircleCI
- Intuit
- Swat.io
- Avocode
- Slack
- StackShare
- eBay
- Asana
- Intuit
- Swat.io