const regex = /^.*getInitialProps[\s\S]*?\bdispatch[\s\S]*?(return).*\n.*/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^.*getInitialProps[\\s\\S]*?\\bdispatch[\\s\\S]*?(return).*\\n.*', 'gm')
const str = `import React from 'react'
class Page extends React.Component {
static async getInitialProps(ctx) {
const res = await fetch('https://api.github.com/repos/zeit/next.js')
const json = await res.json()
dispatchEvent(event)
return { stars: json.stargazers_count }
}
render() {
return <div>Next stars: {this.props.stars}</div>
}
}
export default Page
class Page extends React.Component {
static async getInitialProps(ctx) {
const res = await fetch('https://api.github.com/repos/zeit/next.js')
const json = await res.json()
return { stars: json.stargazers_count }
}
render() {
return <div>Next stars: {this.props.stars}</div>
}
}`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions