How to use babel-plugin-preval - 2 common examples
To help you get started, we’ve selected a few babel-plugin-preval examples, based on popular ways it is used in public projects.
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nscozzaro / physics-is-beautiful / courses / static / courses / js / containers / StudioViews / EditorsViews / containers / LessonWorkSpace / Codesandbox / common / version.js View on Github 
// This is .js for preval
const versionType = preval`module.exports = (() => {
if (process.env.NODE_ENV === 'development') {
return 'DEV';
}
if (process.env.STAGING_BRANCH) {
return 'PR';
}
return 'PROD';
})()`
const versionNumber = Math.floor(preval`module.exports = Date.now();` / 1000)
const shortCommitSha = preval(`
var execSync = require('child_process').execSync;
try {
module.exports = execSync('git rev-parse --short HEAD').toString().trim();
} catch (e) {
module.exports = 'unknown';
}
`)
export const getTimestamp = version => +version.split('-')[1]
export default preval(
`module.exports = "${versionType}-${versionNumber}-${shortCommitSha}";`
)// This is .js for preval
const versionType = preval`module.exports = (() => {
if (process.env.NODE_ENV === 'development') {
return 'DEV';
}
if (process.env.STAGING_BRANCH) {
return 'PR';
}
return 'PROD';
})()`;
const versionNumber = Math.floor(preval`module.exports = Date.now();` / 1000);
const shortCommitSha = preval(`
var execSync = require('child_process').execSync;
try {
module.exports = execSync('git rev-parse --short HEAD').toString().trim();
} catch (e) {
module.exports = 'unknown';
}
`);
export const getTimestamp = version => +version.split('-')[1];
export default preval(
`module.exports = "${versionType}-${versionNumber}-${shortCommitSha}";`
);babel-plugin-preval
Pre-evaluate code at build-time
