How to use the rw.dash.readFileSync function in rw
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josephfrazier / prettier-diff / bin / prettier-textconv.js View on Github 
#!/usr/bin/env node
const rw = require('rw').dash
const prettier = require('prettier')
const stringify = require('json-stable-stringify')
// https://github.com/prettier/prettier/tree/a707dda53b13a6956a825609f30baead7ef08a59#api
const prettierOptions = {
printWidth: 80,
tabWidth: 2,
singleQuote: true,
trailingComma: 'all',
bracketSpacing: true
}
const content = rw.readFileSync(process.argv[2] || '-').toString()
let pretty = content
// try to format JS files
try {
pretty = prettier.format(content, prettierOptions)
} catch (err) {}
// try to format JSON files
// prettier doesn't do this currently: https://github.com/prettier/prettier/issues/322
try {
const sorted = stringify(JSON.parse(content), {
space: prettierOptions.tabWidth
})
// Put a comma after strings, numbers, objects, arrays, `true`, `false`, or
// `null` at the end of a line. See the grammar at http://json.org/
pretty = sorted.replace(/(.["\d}\]el])$/gm, '$1,')
