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If you are writing a plugin for Babel 7.x, it would be\n   * best to use 'program.interpreter' directly.\n   */\n  get shebang(): string {\n    const { interpreter } = this.path.node;\n    return interpreter ? interpreter.value : \"\";\n  }\n  set shebang(value: string) {\n    if (value) {\n      this.path.get(\"interpreter\").replaceWith(interpreterDirective(value));\n    } else {\n      this.path.get(\"interpreter\").remove();\n    }\n  }\n\n  set(key: unknown, val: unknown) {\n    if (key === \"helpersNamespace\") {\n      throw new Error(\n        \"Babel 7.0.0-beta.56 has dropped support for the 'helpersNamespace' utility.\" +\n          \"If you are using @babel/plugin-external-helpers you will need to use a newer \" +\n          \"version than the one you currently have installed. \" +\n          \"If you have your own implementation, you'll want to explore using 'helperGenerator' \" +\n          \"alongside 'file.availableHelper()'.\",\n      );\n    }\n\n    this._map.set(key, val);\n  }\n\n  get(key: unknown): any {\n    return this._map.get(key);\n  }\n\n  has(key: unknown): boolean {\n    return this._map.has(key);\n  }\n\n  getModuleName(): string | undefined | null {\n    return getModuleName(this.opts, this.opts);\n  }\n\n  addImport() {\n    throw new Error(\n      \"This API has been removed. If you're looking for this \" +\n        \"functionality in Babel 7, you should import the \" +\n        \"'@babel/helper-module-imports' module and use the functions exposed \" +\n        \" from that module, such as 'addNamed' or 'addDefault'.\",\n    );\n  }\n\n  /**\n   * Check if a given helper is available in @babel/core's helper list.\n   *\n   * This _also_ allows you to pass a Babel version specifically. If the\n   * helper exists, but was not available for the full given range, it will be\n   * considered unavailable.\n   */\n  availableHelper(name: string, versionRange?: string | null): boolean {\n    let minVersion;\n    try {\n      minVersion = helpers.minVersion(name);\n    } catch (err) {\n      if (err.code !== \"BABEL_HELPER_UNKNOWN\") throw err;\n\n      return false;\n    }\n\n    if (typeof versionRange !== \"string\") return true;\n\n    // semver.intersects() has some surprising behavior with comparing ranges\n    // with pre-release versions. We add '^' to ensure that we are always\n    // comparing ranges with ranges, which sidesteps this logic.\n    // For example:\n    //\n    //   semver.intersects(`<7.0.1`, \"7.0.0-beta.0\") // false - surprising\n    //   semver.intersects(`<7.0.1`, \"^7.0.0-beta.0\") // true - expected\n    //\n    // This is because the first falls back to\n    //\n    //   semver.satisfies(\"7.0.0-beta.0\", `<7.0.1`) // false - surprising\n    //\n    // and this fails because a prerelease version can only satisfy a range\n    // if it is a prerelease within the same major/minor/patch range.\n    //\n    // Note: If this is found to have issues, please also revisit the logic in\n    // transform-runtime's definitions.js file.\n    if (semver.valid(versionRange)) versionRange = `^${versionRange}`;\n\n    return (\n      !semver.intersects(`<${minVersion}`, versionRange) &&\n      !semver.intersects(`>=8.0.0`, versionRange)\n    );\n  }\n\n  addHelper(name: string): t.Identifier {\n    const declar = this.declarations[name];\n    if (declar) return cloneNode(declar);\n\n    const generator = this.get(\"helperGenerator\");\n    if (generator) {\n      const res = generator(name);\n      if (res) return res;\n    }\n\n    // make sure that the helper exists\n    helpers.ensure(name, File);\n\n    const uid = (this.declarations[name] =\n      this.scope.generateUidIdentifier(name));\n\n    const dependencies: { [key: string]: t.Identifier } = {};\n    for (const dep of helpers.getDependencies(name)) {\n      dependencies[dep] = this.addHelper(dep);\n    }\n\n    const { nodes, globals } = helpers.get(\n      name,\n      dep => dependencies[dep],\n      uid,\n      Object.keys(this.scope.getAllBindings()),\n    );\n\n    globals.forEach(name => {\n      if (this.path.scope.hasBinding(name, true /* noGlobals */)) {\n        this.path.scope.rename(name);\n      }\n    });\n\n    nodes.forEach(node => {\n      // @ts-expect-error Fixeme: document _compact node property\n      node._compact = true;\n    });\n\n    this.path.unshiftContainer(\"body\", nodes);\n    // TODO: NodePath#unshiftContainer should automatically register new\n    // bindings.\n    this.path.get(\"body\").forEach(path => {\n      if (nodes.indexOf(path.node) === -1) return;\n      if (path.isVariableDeclaration()) this.scope.registerDeclaration(path);\n    });\n\n    return uid;\n  }\n\n  addTemplateObject() {\n    throw new Error(\n      \"This function has been moved into the template literal transform itself.\",\n    );\n  }\n\n  buildCodeFrameError(\n    node: NodeLocation | undefined | null,\n    msg: string,\n    _Error: typeof Error = SyntaxError,\n  ): Error {\n    let loc = node && (node.loc || node._loc);\n\n    if (!loc && node) {\n      const state: { loc?: NodeLocation[\"loc\"] | null } = {\n        loc: null,\n      };\n      traverse(node as t.Node, errorVisitor, this.scope, state);\n      loc = state.loc;\n\n      let txt =\n        \"This is an error on an internal node. 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