babel-plugin-hyperscript-to-jsx (codmod usage)

![npm version](https://badge.fury.io/js/babel-plugin-hyperscript-to-jsx)

It's a quite complex codemod to migrate from hyperscript to JSX.

Code Before:

javascript
import h from "react-hyperscript";
import hx from "shit"
const StatelessComponent = props => h("h1");
const StatelessWithReturn = props => {
  return h(".class");
};
function HyperscriptAsRegularFunction(props) {
  return h("h1");
}
const HyperscriptAsVariable = h("div.lol", {
  someProp: "lol"
});
const HyperscriptWithExpressionAsChildren = h(
  AnotherComponent,
  { foo: "bar", bar: () => ({}), shouldRender: thing.length > 0 },
  [arr.map(() => h('h1'))]
)

// Should be ignored from transforming const FirstArgTemplateLiteralWithComputedExpressions = h(div.lol${stuff}, { someProp: "lol" });

// Not computed so should be fine const FirstArgTemplateLiteral = h(div.lol, { someProp: "lol" });

// Should be ignored const WhenFirstArgumentIsFunctionThatIsCalled = () => h(getLoadableAnimation('pageCareersDeliver'), [h(fn())])

const ComputedRootWithObjectPropertyDeclaration = () => h( ANIMATIONS[country], { className: "lol", content: h(".selectItem", [ h("div", label), h(".flag", [ h(RoundFlag, { mix: "flag", size: "xs", code: currencyData.countryCode }), // Computed not root should be wrapped in {} h(ANIMATIONS[country], { className: "lol" }) ]) ]) }, [h(ANIMATIONS[country], { className: "lol" }), h("h1"), kek && mem, surreal ? lol : kek, t.tabName, lol,

]
  );
const ThirdArgOnIgnoredIsNotArray = () =>
  h(
    ANIMATIONS[country],
    {
      className: "lol",
    },
    // This first children in array will be ignored FOR THIS UGLY HACK IN INDEX
    children
  );
h(isCanada ? doStuff : doAnotherStuff, { someProp: true })
h('div', isCanada ? someProps : anotherProps)
h('div', isCanada ? someProps : anotherProps, "SomeChildren")
const SecondArgOnIgnoredIsNotArray = () =>
  h(ANIMATIONS[country], children);
const MultiMemberExpressionWithClosingTag = () => h(Pricing.lol.kek, { className }, [ h('h1') ])
// to handle h(Abc, { [kek]: 0, ["norm"]: 1 }) to < Abc {...{ [kek]: 0 }} {...{ ["norm" + lol]: 1 }} norm={1} />
const ComplexComputedAttibutesHandling = () => h(Abc, { [kek]: 0, ["norm" + lol]: 1, ["ok"]: 2 })

// Should process children but ignore computed parent h(calcualted ${stuff}, { amazing: "stuff" }, [ h("h1"), h("h2"), h("h3"), h("div", [ h("div") ]) ])

class Comp extends React.Component { render() { return h("div.example", [ isStuff && h("h1#heading", { ...getProps, ...getKnobs(), stuff: "" }), isStuff ? h("h1#heading", { ...getProps, ...getKnobs(), stuff: "" }) : h("h1#heading", "heading"), h("h1#heading", { ...getProps, ...getKnobs(), stuff: "" }), h("h1#heading", getChildren), h(ANIMATIONS[country], { className: "lol" }), h("h1#heading", getChildren(), [h("div")]), h("div", [h("div", "Some content")]), h("h1#heading", "This is hyperscript"), h("h2", "creating React.js markup"), h( AnotherComponent, { foo: "bar", bar: () => ({}), shouldRender: thing.length > 0 }, [ h("li", [h("a", { href: "http://whatever.com" }, "One list item")]), h("li", "Another list item") ] ) ]); } }`


  Code After:

`jsx harmony import React from 'react' import h from 'react-hyperscript'

import hx from 'shit'

const StatelessComponent = props =>

`const StatelessWithReturn = props => { return`
`} function HyperscriptAsRegularFunction(props) { return`
`} const HyperscriptAsVariable =`
`const HyperscriptWithExpressionAsChildren = ( ({})} shouldRender={thing.length > 0}> {arr.map(() =>`
`)} )`
`// Should be ignored from transforming const FirstArgTemplateLiteralWithComputedExpressions = h(`div.lol${stuff}`, { someProp: 'lol' })`
`// Not computed so should be fine const FirstArgTemplateLiteral =`
`// Should be ignored const WhenFirstArgumentIsFunctionThatIsCalled = () => h(getLoadableAnimation('pageCareersDeliver'), [h(fn())])`
`const ComputedRootWithObjectPropertyDeclaration = () => h( ANIMATIONS[country], { className: 'lol', content: (`
`{label} {// Computed not root should be wrapped in {} h(ANIMATIONS[country], { className: 'lol' })}`
`) }, [ h(ANIMATIONS[country], { className: 'lol' }),`
`, kek && mem, surreal ? lol : kek, t.tabName, lol,`
`] ) const ThirdArgOnIgnoredIsNotArray = () => h( ANIMATIONS[country], { className: 'lol' }, // This first children in array will be ignored FOR THIS UGLY HACK IN INDEX children ) h(isCanada ? doStuff : doAnotherStuff, { someProp: true }); {isCanada ? someProps : anotherProps} ; SomeChildren ; const SecondArgOnIgnoredIsNotArray = () => h(ANIMATIONS[country], children) const MultiMemberExpressionWithClosingTag = () => (`
`) // to handle h(Abc, { [kek]: 0, ["norm"]: 1 }) to < Abc {...{ [kek]: 0 }} {...{ ["norm" + lol]: 1 }} norm={1} /> const ComplexComputedAttibutesHandling = () => ( )`
`// Should process children but ignore computed parent h(`calcualted ${stuff}`, { amazing: 'stuff' }, [`
`, ,`
`,`
`]) class Comp extends React.Component { render() { return ( {isStuff && } {isStuff ? ( ) : ( heading )} {getChildren} {h(ANIMATIONS[country], { className: 'lol' })} Some content This is hyperscript creating React.js markup foo="bar" bar={() => ({})} shouldRender={thing.length > 0} > One list item Another list item ) } }`
`

`Usage`

Install codemod npm install -g @codemod/cli

Then install in root of your project npm install babel-plugin-hyperscript-to-jsx

Run it like that from node_modules:`codemod --plugin ./node_modules/babel-plugin-hyperscript-to-jsx/src/index.js ./src`

Also, you may like to pretty print it immediately using prettier`codemod --plugin ./node_modules/babel-plugin-hyperscript-to-jsx/src/index.js ./src --printer prettier`

Remove babel-plugin-hyperscript-to-jsx from package.json

If there is any issues, let me know in the issues tab here at GitHub.

You can run it against exact file too e.g. ./src/index.js`codemod --plugin ./node_modules/babel-plugin-hyperscript-to-jsx/src/index.js ./src/index.js --printer prettier`

`Limitations`

1) When h is called this way

`javascript h("FirstThing", this.getSomePropsOrChildren());`

Second argument will be a children (to break everything), cause to get whether second argument expression is returning children or props of object is almost impossible.

2) All computed first arguments to h like h(STUFF[computed]) or h(.stuff ${anotherClass})is impossible to codemod, so they will be ignored, and you will need to fix it yourself, they will be kept as is, but their array second and third arguments will be processed with the same approach.

Fix all that by yourself :)

(it's possible but will require further analysis of AST with hardcore traversal and I don't think it worth it)

`Integration with WebStorm/VS Code to do it nicely file by file`


Preconditions:


npm i -g @codemod/cli babel-plugin-hyperscript-to-jsx


$3

1. Go to Preferences -> External Tools -> Click plus to add tool.
2. Config:


Name: h to JSX
Program: codemod
Arguments: -p /babel-plugin-hyperscript-to-jsx/src/index.js $FilePathRelativeToProjectRoot$
Working directory: $ProjectFileDir$

In advanced settings: Tick on: Sync file after execution`

3. Open file you want to transformRight Click -> External Tools -> h to JSX -> Apply prettier/code formatting -> Enjoy4. For even better experience go to.Preferences -> Keymap -> External Tools -> External Tools -> h to JSX -> Attach some key combination

`$3`


1. Open command pallete
2.

>Tasks: Configure Task


3. Press Up -> Select:

Task from tasks.json template

 (or something like that)
4. Copy and paste this:


{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "H to JSX",
            "type": "shell",
            "command": "codemod -p /babel-plugin-hyperscript-to-jsx/src/index.js ${file}"
        }
    ]
}


5. Open command pallete and ask it to open

keybindings.json


6. Add this:


    {
        "key": "cmd+e",
        "command": "workbench.action.tasks.runTask",
        "args": "H to JSX"
    }


7. Open any file and press cmd+e to apply codemod on file.
8. Or if you don't want to bloat your

keybindings.json

 just open Command pallete and type.

Run task -> Enter -> Find in the list "H to JSX" -> Enter

 (Usually will be on top)
9. Apply formatting and enjoy

#### For Revolut plugin to work. ##### Webstorm: - Add to command line arguments-o index={\"revolut\":true} before the $FilePathRelativeToProjectRoot$##### VS Code: - Add to command line arguments-o index='{\"revolut\":true}' before the ${file}`

babel-plugin-hyperscript-to-jsx

babel-plugin-hyperscript-to-jsx (codmod usage)

const StatelessWithReturn = props => { return }function HyperscriptAsRegularFunction(props) { return }const HyperscriptAsVariable =

}const HyperscriptAsVariable =

)} )

, kek && mem, surreal ? lol : kek, t.tabName, lol,

)// to handle h(Abc, { [kek]: 0, ["norm"]: 1 }) to < Abc {...{ [kek]: 0 }} {...{ ["norm" + lol]: 1 }} norm={1} />const ComplexComputedAttibutesHandling = () => ( )

, , ,

,

,

} {isStuff ? (

) : (

heading

{getChildren}

This is hyperscript

creating React.js markup

Usage

Limitations

Integration with WebStorm/VS Code to do it nicely file by file

$3

$3

`) // to handle h(Abc, { [kek]: 0, ["norm"]: 1 }) to < Abc {...{ [kek]: 0 }} {...{ ["norm" + lol]: 1 }} norm={1} /> const ComplexComputedAttibutesHandling = () => ( )`
`// Should process children but ignore computed parent h(`calcualted ${stuff}`, { amazing: 'stuff' }, [`

}
{isStuff ? (

`Usage`

`Limitations`

`Integration with WebStorm/VS Code to do it nicely file by file`

`$3`