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'use strict'
const getPluginName = require('./lib/getPluginName')
const toCamelCase = require('./lib/toCamelCase')
let count = 0
function plugin (fn, options = {}) {
let autoName = false
if (typeof fn.default !== 'undefined') {
// Support for 'export default' behaviour in transpiled ECMAScript module
fn = fn.default
}
if (typeof fn !== 'function') {
throw new TypeError(
`fastify-plugin expects a function, instead got a '${typeof fn}'`
)
}
if (typeof options === 'string') {
options = {
fastify: options
}
}
if (
typeof options !== 'object' ||
Array.isArray(options) ||
options === null
) {
throw new TypeError('The options object should be an object')
}
if (options.fastify !== undefined && typeof options.fastify !== 'string') {
throw new TypeError(`fastify-plugin expects a version string, instead got '${typeof options.fastify}'`)
}
if (!options.name) {
autoName = true
options.name = getPluginName(fn) + '-auto-' + count++
}
fn[Symbol.for('skip-override')] = options.encapsulate !== true
fn[Symbol.for('fastify.display-name')] = options.name
fn[Symbol.for('plugin-meta')] = options
// Faux modules support
if (!fn.default) {
fn.default = fn
}
// TypeScript support for named imports
// See https://github.com/fastify/fastify/issues/2404 for more details
// The type definitions would have to be update to match this.
const camelCase = toCamelCase(options.name)
if (!autoName && !fn[camelCase]) {
fn[camelCase] = fn
}
return fn
}
module.exports = plugin
module.exports.default = plugin
module.exports.fastifyPlugin = plugin