systemjs-cjs-extra/dist/index.min.js.map

An extra for SystemJS 6 to load CommonJS modules in the browser

{"version":3,"file":"index.min.js","sources":["../src/constants.js","../src/utils.js","../src/index.js"],"sourcesContent":["export const CJS_REQUIRE_REGEX =\n  /(?:^\\uFEFF?|[^$_a-zA-Z\\xA0-\\uFFFF.\"'])require\\s*\\(\\s*(\"[^\"\\\\]*(?:\\\\.[^\"\\\\]*)*\"|'[^'\\\\]*(?:\\\\.[^'\\\\]*)*'|`[^`\\\\]*(?:\\\\.[^`\\\\]*)*`)\\s*\\)/g;\nexport const AMD_MODULE_REGEX =\n  /(?:^\\uFEFF?|[^$_a-zA-Z\\xA0-\\uFFFF.])define\\s*\\(\\s*(\"[^\"]+\"\\s*,\\s*|'[^']+'\\s*,\\s*)?\\s*(\\[(\\s*((\"[^\"]+\"|'[^']+')\\s*,|\\/\\/.*\\r?\\n|\\/\\*(.|\\s)*?\\*\\/))*(\\s*(\"[^\"]+\"|'[^']+')\\s*,?)?(\\s*(\\/\\/.*\\r?\\n|\\/\\*(.|\\s)*?\\*\\/))*\\s*\\]|function\\s*|{|[_$a-zA-Z\\xA0-\\uFFFF][_$a-zA-Z0-9\\xA0-\\uFFFF]*\\))/;\nexport const CJS_EXPORTS_REGEX =\n  /(?:^\\uFEFF?|[^$_a-zA-Z\\xA0-\\uFFFF.])(exports\\s*(\\[['\"]|\\.)|module(\\.exports|\\['exports'\\]|\\[\"exports\"\\])\\s*(\\[['\"]|[=,\\.]))/;\nexport const CJS_FILEDIR_REGEX = /__filename|__dirname]/;\nexport const COMMENT_REGEX = /(^|[^\\\\])(\\/\\*([\\s\\S]*?)\\*\\/|([^:]|^)\\/\\/(.*)$)/mg;\nexport const STRING_REGEX = /(\"[^\"\\\\\\n\\r]*(\\\\.[^\"\\\\\\n\\r]*)*\"|'[^'\\\\\\n\\r]*(\\\\.[^'\\\\\\n\\r]*)*')/g;\nexport const JAVASCRIPT_REGEX = /^[^#?]+\\.js([?#].*)?$/;\nexport const JS_CONTENT_TYPE_REGEX = /^(text|application)\\/(x-)?javascript(;|$)/;\n","import {\n  AMD_MODULE_REGEX,\n  CJS_EXPORTS_REGEX,\n  CJS_FILEDIR_REGEX,\n  CJS_REQUIRE_REGEX,\n  COMMENT_REGEX,\n  STRING_REGEX,\n} from \"./constants\";\n\nexport function isCJSFormat(source) {\n  return (\n    !AMD_MODULE_REGEX.test(source) &&\n    (CJS_REQUIRE_REGEX.test(source) ||\n      CJS_EXPORTS_REGEX.test(source) ||\n      CJS_FILEDIR_REGEX.test(source))\n  );\n}\n\nexport function errMsg(errCode, msg) {\n  return (\n    (msg || \"\") +\n    \" (SystemJS Error#\" +\n    errCode +\n    \" \" +\n    \"https://github.com/systemjs/systemjs/blob/main/docs/errors.md#\" +\n    errCode +\n    \")\"\n  );\n}\n\nexport function getPathVars(url) {\n  const filename = url.substring(url.lastIndexOf(\"/\") + 1);\n  let dirname = url.split(\"/\");\n  dirname.pop();\n  dirname = dirname.join(\"/\");\n\n  return {\n    filename,\n    dirname,\n  };\n}\n\nexport function extractDepsFromSource(source) {\n  CJS_REQUIRE_REGEX.lastIndex =\n    COMMENT_REGEX.lastIndex =\n    STRING_REGEX.lastIndex =\n      0;\n  let depIndentifiers = [];\n  let stringLocations = [];\n  let commentLocations = [];\n  let match;\n\n  if (source.length / source.split(\"\\n\").length < 200) {\n    while ((match = STRING_REGEX.exec(source))) {\n      stringLocations.push([match.index, match.index + match[0].length]);\n    }\n\n    while ((match = COMMENT_REGEX.exec(source))) {\n      // only track comments not starting in strings\n      if (!inLocation(stringLocations, match)) {\n        commentLocations.push([\n          match.index + match[1].length,\n          match.index + match[0].length - 1,\n        ]);\n      }\n    }\n  }\n\n  while ((match = CJS_REQUIRE_REGEX.exec(source))) {\n    // ensure we're not within a string or comment location\n    if (\n      !inLocation(stringLocations, match) &&\n      !inLocation(commentLocations, match)\n    ) {\n      var dep = match[1].substring(1, match[1].length - 1);\n      // skip cases like require('\" + file + \"')\n      if (dep.match(/\"|'/)) {\n        continue;\n      }\n      depIndentifiers.push(dep);\n    }\n  }\n\n  return depIndentifiers;\n}\n\nfunction inLocation(locations, match) {\n  for (var i = 0; i < locations.length; i++) {\n    if (locations[i][0] < match.index && locations[i][1] > match.index) {\n      return true;\n    }\n  }\n  return false;\n}\n\nexport function template(source) {\n  return `(function (module,exports,require,__filename,__dirname, global, GLOBAL) {\n${source}\n}).apply(__cjsWrapper.exports, __cjsWrapper.args)`;\n}\n\nexport function createRequire(loader, parentUrl) {\n  return function require(id) {\n    const resolvedUrl = loader.resolve(id, parentUrl);\n    const module = loader.get(resolvedUrl);\n\n    if (!module) {\n      throw new Error(\n        'Module not already loaded loading \"' +\n          id +\n          '\" as ' +\n          resolvedUrl +\n          (parentUrl ? ' from \"' + parentUrl + '\".' : \".\"),\n      );\n    }\n\n    return \"__useDefault\" in module ? module.default : module;\n  };\n}\n","import {\n  createRequire,\n  extractDepsFromSource,\n  getPathVars,\n  template,\n  isCJSFormat,\n  errMsg,\n} from \"./utils\";\n\nimport { JAVASCRIPT_REGEX, JS_CONTENT_TYPE_REGEX } from \"./constants\";\n\nimport global from \"global\";\n\nconst systemJSPrototype = global.System.constructor.prototype;\nconst originalInstantiate = systemJSPrototype.instantiate;\nconst originalShouldFetch =\n  systemJSPrototype.shouldFetch.bind(systemJSPrototype);\n\nsystemJSPrototype.shouldFetch = function (url) {\n  return originalShouldFetch(url) || JAVASCRIPT_REGEX.test(url);\n};\n\nsystemJSPrototype.instantiate = function (url, parentUrl, meta) {\n  const isJavascriptFile = JAVASCRIPT_REGEX.test(url);\n\n  if (!this.shouldFetch(url)) {\n    return originalInstantiate.call(this, url, parentUrl, meta);\n  }\n\n  if (isJavascriptFile) {\n    return systemJSPrototype\n      .fetch(url, {\n        credentials: \"same-origin\",\n        meta: meta,\n      })\n      .then((res) => {\n        if (!res.ok) {\n          throw Error(\n            errMsg(\n              7,\n              res.status +\n                \" \" +\n                res.statusText +\n                \", loading \" +\n                url +\n                (parentUrl ? \" from \" + parentUrl : \"\"),\n            ),\n          );\n        }\n        const contentType = res.headers.get(\"content-type\");\n\n        if (!contentType || !JS_CONTENT_TYPE_REGEX.test(contentType)) {\n          throw Error(\n            errMsg(\n              4,\n              'Unknown Content-Type \"' +\n                contentType +\n                '\", loading ' +\n                url +\n                (parentUrl ? \" from \" + parentUrl : \"\"),\n            ),\n          );\n        }\n\n        return res.text().then((source) => {\n          if (isCJSFormat(source)) {\n            const exports = {};\n            const module = { exports };\n            const require = createRequire(this, parentUrl ?? url);\n            const dependencies = extractDepsFromSource(source);\n\n            // Import all dependencies into the SystemJS registry\n            const depsPromises = dependencies.map((dep) =>\n              global.System.import(dep, parentUrl ?? url),\n            );\n\n            // Make sure all deps are loaded before attempting to exec the module\n            // otherwise \"require\" will fail at System.get\n            return Promise.all(depsPromises).then(() => {\n              let _src = template(source);\n\n              if (_src.indexOf(\"//# sourceURL=\") < 0) {\n                _src += \"\\n//# sourceURL=\" + url;\n              }\n\n              const { filename, dirname } = getPathVars(url);\n              global.__cjsWrapper = {\n                exports,\n                args: [\n                  module,\n                  exports,\n                  require,\n                  filename,\n                  dirname,\n                  global,\n                  global,\n                ],\n              };\n              // exec the code to capture exports.\n              (0, eval)(_src);\n\n              global.__cjsWrapper = undefined;\n\n              // Create a System.register format and pass the dependencies\n              // and module exports.\n              systemJSPrototype.register(dependencies, function (_export) {\n                return {\n                  setters: [],\n                  execute: function () {\n                    _export(module.exports);\n                    _export(\"default\", module.exports);\n                  },\n                };\n              });\n\n              // Return the new module\n              return systemJSPrototype.getRegister(url);\n            });\n          } else {\n            // If not a CommonJS module, use default behavior\n            if (source.indexOf(\"//# sourceURL=\") < 0) {\n              source += \"\\n//# sourceURL=\" + url;\n            }\n            (0, eval)(source);\n            return systemJSPrototype.getRegister(url);\n          }\n        });\n      });\n  }\n\n  // If not a JS file, use default behavior\n  return originalInstantiate.call(this, url, parentUrl, 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