export class ModuleImporter {
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								    /**
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								     * Creates a new instance.
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								     * @param {string} [cwd] The current working directory to resolve from.
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								     */
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								    constructor(cwd?: string);
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								    /**
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								     * The base directory from which paths should be resolved.
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								     * @type {string}
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								     */
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								    cwd: string;
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								    /**
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								     * Resolves a module based on its name or location.
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								     * @param {string} specifier Either an npm package name or
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								     *      relative file path.
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								     * @returns {string|undefined} The location of the import.
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								     * @throws {Error} If specifier cannot be located.
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								     */
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								    resolve(specifier: string): string | undefined;
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								    /**
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								     * Imports a module based on its name or location.
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								     * @param {string} specifier Either an npm package name or
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								     *      relative file path.
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								     * @returns {Promise<object>} The module's object.
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								     */
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								    import(specifier: string): Promise<object>;
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								}
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