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|
#!/usr/bin/env node
/**
* XXX: we use Node.js native modules only here to avoid
* requiring any runtime dependencies when folks install
* @primer/css
*/
const fs = require('fs')
const {promisify} = require('util')
const readFile = promisify(fs.readFile)
const writeFile = promisify(fs.writeFile)
const {dirname, join} = require('path')
const IMPORT_PATTERN = /\@import\s+['"]([^'"]+)['"]/g
const replacements = [
[/primer-marketing-(\w+)(\/lib)?/, '@primer/css/marketing/$1'],
[/primer-(\w+)(\/lib)?/, '@primer/css/$1'],
[/primer\b/, '@primer/css']
]
const paths = process.argv.slice(2)
const warn = (...args) => console.warn(...args)
if (paths.length) {
Promise.all(
paths.map(path => {
return migrate(path).then(reps => report(reps, path))
})
).catch(die)
} else {
readFile('/dev/stdin', 'utf8')
.then(input => {
const [output, reps] = replace(input)
report(reps, 'stdin')
process.stdout.write(output)
})
.catch(die)
}
function migrate(path) {
return readFile(path, 'utf8').then(input => {
if (!IMPORT_PATTERN.test(input)) {
warn(`No SCSS imports found in ${path}`)
return false
}
const [output, reps] = replace(input)
if (reps.length) {
return writeFile(path, output, 'utf8').then(() => reps)
} else {
return false
}
})
}
function replace(input) {
const reps = []
const output = input.replace(IMPORT_PATTERN, (str, path) => {
for (const [from, to] of replacements) {
if (from.test(path)) {
const replaced = str.replace(from, to)
reps.push([path, path.replace(from, to)])
return replaced
}
}
return str
})
return [output, reps]
}
function report(reps, path) {
if (reps.length) {
warn(`Replaced ${reps.length} imports in ${path}:`)
for (const [i, [from, to]] of Object.entries(reps)) {
warn(` ${Number(i) + 1}. (${from}) -> (${to})`)
}
} else {
warn(`No legacy imports found in ${path}`)
}
}
function die(error) {
console.error(error)
process.exitCode = 1
}
|
