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import { EtaParseError } from "./err.ts";
/* TYPES */import type { Eta } from "./core.ts";import type { EtaConfig, Options } from "./config.ts";
export type TemplateFunction = (this: Eta, data?: object, options?: Partial<Options>) => string;/* END TYPES */
/* istanbul ignore next */const AsyncFunction = async function () {}.constructor; // eslint-disable-line @typescript-eslint/no-empty-function
/** * Takes a template string and returns a template function that can be called with (data, config) * * @param str - The template string * @param config - A custom configuration object (optional) */
export function compile(this: Eta, str: string, options?: Partial<Options>): TemplateFunction {  const config: EtaConfig = this.config;
  /* ASYNC HANDLING */  // code gratefully taken from https://github.com/mde/ejs and adapted  const ctor = options && options.async ? (AsyncFunction as FunctionConstructor) : Function;  /* END ASYNC HANDLING */
  try {    return new ctor(      config.varName,      "options",      this.compileToString.call(this, str, options)    ) as TemplateFunction; // eslint-disable-line no-new-func  } catch (e) {    if (e instanceof SyntaxError) {      throw new EtaParseError(        "Bad template syntax\n\n" +          e.message +          "\n" +          Array(e.message.length + 1).join("=") +          "\n" +          this.compileToString.call(this, str, options) +          "\n" // This will put an extra newline before the callstack for extra readability      );    } else {      throw e;    }  }}