1 | 'use strict'
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2 |
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3 | const semver = require('semver')
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4 | const console = require('console')
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5 |
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6 | const DISPLAY_NAME_SYMBOL = Symbol.for('fastify.display-name')
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7 | const fpStackTracePattern = new RegExp('at\\s{1}plugin\\s{1}.*\\n\\s*(.*)')
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8 | const fileNamePattern = new RegExp('(?:\\/|\\\\)(\\w*(\\.\\w*)*)\\.js')
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9 |
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10 | function plugin (fn, options) {
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11 | if (typeof fn !== 'function') {
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12 | throw new TypeError(`fastify-plugin expects a function, instead got a '${typeof fn}'`)
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13 | }
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14 |
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15 | fn[DISPLAY_NAME_SYMBOL] = checkName(fn)
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16 |
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17 | fn[Symbol.for('skip-override')] = true
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18 |
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19 | if (options === undefined) return fn
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20 |
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21 | if (typeof options === 'string') {
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22 | checkVersion(options)
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23 | return fn
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24 | }
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25 |
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26 | if (typeof options !== 'object' || Array.isArray(options) || options === null) {
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27 | throw new TypeError('The options object should be an object')
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28 | }
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29 |
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30 | if (options.fastify) {
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31 | checkVersion(options.fastify)
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32 | delete options.fastify
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33 | }
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34 |
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35 | fn[Symbol.for('plugin-meta')] = options
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36 |
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37 | return fn
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38 | }
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39 |
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40 | function checkName (fn) {
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41 | if (fn.name.length > 0) return fn.name
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42 |
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43 | try {
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44 | throw new Error('anonymous function')
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45 | } catch (e) {
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46 | const stack = e.stack
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47 | let m = stack.match(fpStackTracePattern)
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48 | m = m[1].match(fileNamePattern)[1]
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49 | return m
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50 | }
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51 | }
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52 |
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53 | function checkVersion (version) {
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54 | if (typeof version !== 'string') {
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55 | throw new TypeError(`fastify-plugin expects a version string, instead got '${typeof version}'`)
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56 | }
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57 |
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58 | var fastifyVersion
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59 | try {
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60 | fastifyVersion = require('fastify/package.json').version.replace(/-rc\.\d+/, '')
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61 | } catch (_) {
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62 | console.info('fastify not found, proceeding anyway')
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63 | }
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64 |
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65 | if (fastifyVersion && !semver.satisfies(fastifyVersion, version)) {
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66 | throw new Error(`fastify-plugin - expected '${version}' fastify version, '${fastifyVersion}' is installed`)
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67 | }
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68 | }
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69 |
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70 | module.exports = plugin
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