4591476433

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push

github

Committed by GitHub

Commit Message

Make stdlib available to modules (#1388)

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76.12

/src/modules/moduleLoader.ts

import es from 'estree'
import { memoize } from 'lodash'
import { XMLHttpRequest as NodeXMLHttpRequest } from 'xmlhttprequest-ts'

import {
  ModuleConnectionError,
  ModuleInternalError,
  ModuleNotFoundError
} from '../errors/moduleErrors'
import { Context } from '../types'
import { wrapSourceModule } from '../utils/operators'
import { ModuleBundle, ModuleDocumentation, ModuleFunctions, Modules } from './moduleTypes'
import { getRequireProvider } from './requireProvider'

// Supports both JSDom (Web Browser) environment and Node environment
export const newHttpRequest = () =>
  typeof window === 'undefined' ? new NodeXMLHttpRequest() : new XMLHttpRequest()

// Default modules static url. Exported for testing.
export let MODULES_STATIC_URL = 'https://source-academy.github.io/modules'

export function setModulesStaticURL(url: string) {
  MODULES_STATIC_URL = url
}

/**
 * Send a HTTP Get request to the specified endpoint.
 * @return NodeXMLHttpRequest | XMLHttpRequest
 */
export function httpGet(url: string): string {
  const request = newHttpRequest()
  try {
    // If running function in node environment, set request timeout
    if (typeof window === 'undefined') request.timeout = 10000
    request.open('GET', url, false)
    request.send(null)
  } catch (error) {
    if (!(error instanceof DOMException)) throw error
  }
  if (request.status !== 200 && request.status !== 304) throw new ModuleConnectionError()
  return request.responseText
}

/**
 * Send a HTTP GET request to the modules endpoint to retrieve the manifest
 * @return Modules
 */
export const memoizedGetModuleManifest = memoize(getModuleManifest)
function getModuleManifest(): Modules {
  const rawManifest = httpGet(`${MODULES_STATIC_URL}/modules.json`)
  return JSON.parse(rawManifest)
}

/**
 * Send a HTTP GET request to the modules endpoint to retrieve the specified file
 * @return String of module file contents
 */

const memoizedGetModuleFileInternal = memoize(getModuleFile)
export const memoizedGetModuleFile = (name: string, type: 'tab' | 'bundle' | 'json') =>
  memoizedGetModuleFileInternal({ name, type })
function getModuleFile({ name, type }: { name: string; type: 'tab' | 'bundle' | 'json' }): string {
  return httpGet(`${MODULES_STATIC_URL}/${type}s/${name}.js${type === 'json' ? 'on' : ''}`)
}

/**
 * Loads the respective module package (functions from the module)
 * @param path imported module name
 * @param context
 * @param node import declaration node
 * @returns the module's functions object
 */
export function loadModuleBundle(path: string, context: Context, node?: es.Node): ModuleFunctions {
  const modules = memoizedGetModuleManifest()

  // Check if the module exists
  const moduleList = Object.keys(modules)
  if (moduleList.includes(path) === false) throw new ModuleNotFoundError(path, node)

  // Get module file
  const moduleText = memoizedGetModuleFile(path, 'bundle')
  try {
    const moduleBundle: ModuleBundle = eval(moduleText)
    return wrapSourceModule(path, moduleBundle, getRequireProvider(context))
  } catch (error) {
    // console.error("bundle error: ", error)
    throw new ModuleInternalError(path, error, node)
  }
}

/**
 * Loads the module contents of a package
 *
 * @param path imported module name
 * @param node import declaration node
 * @returns an array of functions
 */
export function loadModuleTabs(path: string, node?: es.Node) {
  const modules = memoizedGetModuleManifest()
  // Check if the module exists
  const moduleList = Object.keys(modules)
  if (moduleList.includes(path) === false) throw new ModuleNotFoundError(path, node)

  // Retrieves the tabs the module has from modules.json
  const sideContentTabPaths: string[] = modules[path].tabs
  // Load the tabs for the current module
  return sideContentTabPaths.map(path => {
    const rawTabFile = memoizedGetModuleFile(path, 'tab')
    try {
      return eval(rawTabFile)
    } catch (error) {
      // console.error('tab error:', error);
      throw new ModuleInternalError(path, error, node)
    }
  })
}

export const memoizedloadModuleDocs = memoize(loadModuleDocs)
export function loadModuleDocs(path: string, node?: es.Node) {
  try {
    const modules = memoizedGetModuleManifest()
    // Check if the module exists
    const moduleList = Object.keys(modules)
    if (!moduleList.includes(path)) throw new ModuleNotFoundError(path, node)
    const result = getModuleFile({ name: path, type: 'json' })
    return JSON.parse(result) as ModuleDocumentation
  } catch (error) {
    console.warn('Failed to load module documentation')
    return null
  }
}

1	import es from 'estree'
2	import { memoize } from 'lodash'	62✔
3	import { XMLHttpRequest as NodeXMLHttpRequest } from 'xmlhttprequest-ts'	62✔
4
5	import {	62✔
6	ModuleConnectionError,
7	ModuleInternalError,
8	ModuleNotFoundError
9	} from '../errors/moduleErrors'
10	import { Context } from '../types'
11	import { wrapSourceModule } from '../utils/operators'	62✔
12	import { ModuleBundle, ModuleDocumentation, ModuleFunctions, Modules } from './moduleTypes'
13	import { getRequireProvider } from './requireProvider'	62✔
14
15	// Supports both JSDom (Web Browser) environment and Node environment
16	export const newHttpRequest = () =>	62✔
17	typeof window === 'undefined' ? new NodeXMLHttpRequest() : new XMLHttpRequest()	21!
18
19	// Default modules static url. Exported for testing.
20	export let MODULES_STATIC_URL = 'https://source-academy.github.io/modules'	62✔
21
22	export function setModulesStaticURL(url: string) {	62✔
23	MODULES_STATIC_URL = url	1✔
24	}
25
26	/**
27	* Send a HTTP Get request to the specified endpoint.
28	* @return NodeXMLHttpRequest \| XMLHttpRequest
29	*/
30	export function httpGet(url: string): string {	62✔
31	const request = newHttpRequest()	20✔
32	try {	20✔
33	// If running function in node environment, set request timeout
34	if (typeof window === 'undefined') request.timeout = 10000	20!
35	request.open('GET', url, false)	20✔
36	request.send(null)	20✔
37	} catch (error) {
38	if (!(error instanceof DOMException)) throw error	×
39	}
40	if (request.status !== 200 && request.status !== 304) throw new ModuleConnectionError()	20✔
41	return request.responseText	19✔
42	}
43
44	/**
45	* Send a HTTP GET request to the modules endpoint to retrieve the manifest
46	* @return Modules
47	*/
48	export const memoizedGetModuleManifest = memoize(getModuleManifest)	62✔
49	function getModuleManifest(): Modules {
50	const rawManifest = httpGet(`${MODULES_STATIC_URL}/modules.json`)	8✔
51	return JSON.parse(rawManifest)	8✔
52	}
53
54	/**
55	* Send a HTTP GET request to the modules endpoint to retrieve the specified file
56	* @return String of module file contents
57	*/
58
59	const memoizedGetModuleFileInternal = memoize(getModuleFile)	62✔
60	export const memoizedGetModuleFile = (name: string, type: 'tab' \| 'bundle' \| 'json') =>	62✔
61	memoizedGetModuleFileInternal({ name, type })	10✔
62	function getModuleFile({ name, type }: { name: string; type: 'tab' \| 'bundle' \| 'json' }): string {
63	return httpGet(`${MODULES_STATIC_URL}/${type}s/${name}.js${type === 'json' ? 'on' : ''}`)	10!
64	}
65
66	/**
67	* Loads the respective module package (functions from the module)
68	* @param path imported module name
69	* @param context
70	* @param node import declaration node
71	* @returns the module's functions object
72	*/
73	export function loadModuleBundle(path: string, context: Context, node?: es.Node): ModuleFunctions {	62✔
74	const modules = memoizedGetModuleManifest()	4✔
75
76	// Check if the module exists
77	const moduleList = Object.keys(modules)	4✔
78	if (moduleList.includes(path) === false) throw new ModuleNotFoundError(path, node)	4!
79
80	// Get module file
81	const moduleText = memoizedGetModuleFile(path, 'bundle')	4✔
82	try {	4✔
83	const moduleBundle: ModuleBundle = eval(moduleText)	4✔
84	return wrapSourceModule(path, moduleBundle, getRequireProvider(context))	3✔
85	} catch (error) {
86	// console.error("bundle error: ", error)
87	throw new ModuleInternalError(path, error, node)	1✔
88	}
89	}
90
91	/**
92	* Loads the module contents of a package
93	*
94	* @param path imported module name
95	* @param node import declaration node
96	* @returns an array of functions
97	*/
98	export function loadModuleTabs(path: string, node?: es.Node) {	62✔
99	const modules = memoizedGetModuleManifest()	4✔
100	// Check if the module exists
101	const moduleList = Object.keys(modules)	4✔
102	if (moduleList.includes(path) === false) throw new ModuleNotFoundError(path, node)	4!
103
104	// Retrieves the tabs the module has from modules.json
105	const sideContentTabPaths: string[] = modules[path].tabs	4✔
106	// Load the tabs for the current module
107	return sideContentTabPaths.map(path => {	4✔
108	const rawTabFile = memoizedGetModuleFile(path, 'tab')	4✔
109	try {	4✔
110	return eval(rawTabFile)	4✔
111	} catch (error) {
112	// console.error('tab error:', error);
113	throw new ModuleInternalError(path, error, node)	1✔
114	}
115	})
116	}
117
118	export const memoizedloadModuleDocs = memoize(loadModuleDocs)	62✔
119	export function loadModuleDocs(path: string, node?: es.Node) {	62✔
120	try {	×
121	const modules = memoizedGetModuleManifest()	×
122	// Check if the module exists
123	const moduleList = Object.keys(modules)	×
124	if (!moduleList.includes(path)) throw new ModuleNotFoundError(path, node)	×
125	const result = getModuleFile({ name: path, type: 'json' })	×
126	return JSON.parse(result) as ModuleDocumentation	×
127	} catch (error) {
128	console.warn('Failed to load module documentation')	×
129	return null	×
130	}
131	}

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