rocket-translator

RocketJS

Translate HTML code to Vue or React.

Instalation

To install simply: Use npm

npm i -g rocket-translator

or Yarn

yarn global add rocket-translator

Getting Started

Basic

You can convert this:

<div>Hello {name - state - "World"}!</div>

into this:

import React, {Component} from "react";

class MyComponent extends Component {
    constructor() {
        super();
        this.state = {
            name:"World"
        };
    }
    render(){
        return(
            <div>Hello {this.state.name}!</div>
        )
    }
}
export default MyComponent;

or this:

<template>
    <div>Hello {{name}}!</div>
</template>
<script>
    export default {
        name:"MyComponent",
        data(){
            return {
                name:"World"
            }
        }
    }
</script>

How to Use

To use, simpy create a HTML file, with the code to translate, and run:

rocket [mode] path/to/file.html [output folder]

The mode may be vue or react.

The output folder is optional, if this is not defined will create a folder named dist.

Guide

• States Simple
• Props
• Computed
• Methods
• Components
• Watchers
• Inputs Handler
• Conditionals
• List Render
• Bind Attributes
• JavaScript Management
• HTML Syntax

States Simple

A State in a Vue or React component, are a way to set data that affect the view, and when this changes, the component re-render the view.

To get values from the HTML, we must declare into {}. And to the declare a state, we have 2 modes to set it: Simple, With Value.

The Simple mode, is declared writing only the state name into the template and writing the type: state.

Example:

<div>{myState - state}</div>

In the With Value mode, is declared when, we write the state name, the type: state and the value for this state.

Example:

<div>{stateName - state - "Some Value"}</div>

The value may be String, Number, Boolean,Array and Object.

And in the simple case, we obtain the next component state.

In Vue:

data(){
    return {
        myState:""
    }
}

And in React we obtain:

this.state = {
    myState:""
}

In the With value case we obtain. In Vue:

data(){
    return {
        stateName:"Some Value"
    }
}

And in React:

this.state = {
    stateName:"Some Value"
}

To know more about states, and JavaScript Management. You can see JavaScript Management section.

Props

The props in a component, are data that a parent (container) component pass to a child component.

And like the state, we may declare a prop with this format {propName - prop}.

Example:

<div>{parentData - prop}</div>

And declaring a prop, the final template will render, in Vue:

props:{
    parentData:{
        type:String,
        required:true,
        default:"Hello World"
    }
}

And in React, auto declares the prop.

return(
    <div>{this.props.parentData}</div>
)

Computed

A Computed propierty is a function that return a String or Number value, and this is render on the template. And to declare a computed propierty, simply we can set the computed propierty name and the type: computed.

<div>{computedName - computed}</div>

This will create a computed properties that returns a Hello World. And to set your own computed propierty, you must add a script tag and create a function named like the computed propierty.

<div>Hi I Am {fullName - computed}!</div>
<script>
function fullName() {
    var name = "Foo";
    var lastName = "Bar";

    return name + " " + lastName;
}
</script>

Too know more about JavaScript Management go to JavaScript Management section.

Methods

A Method is a function executed by an event on the final render or by the render. Is not necesary declare the method only set the event into the tag.

<button onclick="hello()">Say Hello</button>
<script>
function hello() {
    alert("Hello World");
}
</script>

Components (Partial)

To import a component inside the main component. Only add the tag with the component syntax.

<MyComponent />

And to add a attr with a state value add : on the attr front.

<MyComponent :my-bind-attr="stateName" />

To write the component content, add a component tag with the component content. And a attr name with the component name. And others attrs can be passed to the component.

<component name="HelloWorldComponent" name="World">
    <div>
        <h1>Hello {name}!</h1>
    </div>
</component>

State Watchers

To declare a State Watcher you must add the keyword watch followed by the state name to watch equal to function to execute when the state changes.

watch stateName = function(e) {
    //Handle State
}
//Or with ES6
watch stateName = e => {
    //Handle State
}

Inputs Handler

To handle a input, you must add the attr name on the input tag, and the value will be take to add a state with that name.

<input type="text" name="username" />

On Vue will render.

<template>
    <input type="text" v-model="username" name="username"/>
</template>
<script>
    export default {
        name:"MyComponent",
        data() {
            return {
                username:""
            }
        }
    }
</script>

On React.

import React, {Component} from "react";

class MyComponent extends Component {
    constructor() {
        super();
        this.state = {
            username:""
        }
    }
    inputHandler({target}){
        const value = target.type === 'checkbox' ? target.checked : target.value;
        const name = target.name;
        this.setState({
            [name]: value
        })
    }`
}

Conditionals

To declare a conditional, add the if tag, with the cond attr, where cond is the condition to evaluate.

Example:

<if cond="auth">
    <span>Congratulations! you are Sign in this platform</span>
</if>

And you can set it with an else tag.

<if cond="password.length < 6">
    <span>Password must have more of 6 characters</span>
</if>
<else>
    <span>Password is very strong</span>
</else>

List Render

Like the conditionals, add a loop is't very easy, add a for tag, with the val attr.

<for val="varName in stateName">
    <span>{varName}</span>
</for>

Bind Attributes

A Bind Attribute is a form to set a state value on a tag attribute. And the syntax is like on Vue.

<span :style="stateName">Hello World</span>

If you want add a default value you must add a - followed of the value.

<button :class="classButton - 'value'"></button>

JavaScript Management

To the JavaScript Management, we add a few of keywords to help with the code imports. We must follow some rules to the correctly function of the translator.

To include JavaScript on the template, add a script tag with the JavaScript code to translate. Or you can add the line #js path/to/js.js to import a external file.

Keywords

State

The keyword state is used to declare a state from JavaScript. Using the next format: state stateName = stateValue.

The State Value can be type: String, Number, Boolean, Array or Object.

Watch

The keyword watch is used to assign a Watcher to a state or prop. Assigning as value the function to execute with the param that the function get.

watch stateOrProp = function(e) {
    console.log(e);
}

// Or use ES6

watch stateOrProp = e => {
    console.log(e);
}

Functions

The Functions are to change the method and computed properties execution. If the method or computed name match with the function name, this will be that method or computed.

<div>
    <span>This is my {computedPropierty - computed} propierty</span>
    <button onclick="sayHello()">Say Hello</button>
</div>
<script>
    function computedPropierty() {
        return "Computed"
    }

    function sayHello() {
        alert("Hello World");
    }
</script>

Filter

The JavaScript Filter is structured to filter the states and props. If into the code we have a function that contain a var with the state or prop name, this will be replaced automaticaly. Is not necesary declare like a state.

state name = "Hello";
state lastName = "World";

function sayHello() {
    alert(name + " " + lastName);
    /* 
        will return on React: alert(this.state.name + " " + this.state.lastName);
        and on Vue: alert(this.name + " " + this.lastName);
    */
} 

Note: You must evite use vars with state names, until we fix this.

HTML Syntax

Like on JavaScript, on HTML we have a specific syntax, that we must follow to the correctly translator function.

Bars Declaration

The most used is the bars declaration {}, this is used to assign a state, prop, computed or the out framework syntax.

Framework Declarative Syntax: { unsignedValue }

State without value: {stateName - state}

State With Value: {stateName - state - value} The value can be type: String, Number, Boolean, Array and Object.

Prop: {propName - prop}

Computed Propierty: {computedName - computed}

Import Tag

To import a JavaScript external file, we use: #js path/to/js.js.

Note: We want add CSS Support.

Bind Attributes

To execute JavaScript syntax or assign a state or prop value on an HTML attribute, we use :attrName="Js or State".

Conditionals And Loops Tags

We add three HTML tags to assign Conditionals and Loops. if, else and for.

<if cond="condToEvaluate">
    <span>If Content</span>
</if>
<else>
    <span>Else Content</span>
</else>
<for val="varName in stateName">
    <span>For Content</span>
</for>

Component Tag

We add this tag to declare a custom component inside the Main Component

<component name="ComponentName">
    <span>Component Content</span>
</component>

To Do

Features Support

• States
• Methods
• Computed
• Props
• States Watchers
• Components
• Bind States, Props, JS Expresions
• Input Handlers
• JavaScript Management (partial)
• Conditionals
• Nested Conditionals
• Loops
• Nested Loops
• Inner HTML
• Lifecycles
• React without JSX
• React without ES6
• Vue Standalone
• Next Framework
• Angular Support

Note: If you see that some feature is missing, you can open a pull request or write an issue, and tell what feature is missing.

Contributing

To contribute you can Join to our Slack channel for more info. (Info in Spanish)

Coming soon we add an english thread.