|
|
import { argumentNotEmptyString } from "../safe";
|
|
|
import { TraceSource } from "../log/TraceSource";
|
|
|
|
|
|
const trace = TraceSource.get(module.id);
|
|
|
|
|
|
const mainModule = require.main;
|
|
|
const mainRequire = (id: string) => mainModule ? mainModule.require(id) : require;
|
|
|
|
|
|
class ModuleResolver {
|
|
|
_base: string | undefined;
|
|
|
_require: NodeRequireFunction;
|
|
|
|
|
|
constructor(req: NodeRequireFunction, base?: string) {
|
|
|
this._base = base;
|
|
|
this._require = (req || mainRequire).bind(null);
|
|
|
}
|
|
|
|
|
|
resolve(moduleName: string) {
|
|
|
argumentNotEmptyString(moduleName, "moduleName");
|
|
|
const resolvedName = moduleName[0] === "." && this._base ? [this._base, moduleName].join("/") : moduleName;
|
|
|
|
|
|
trace.debug(`${moduleName} -> ${resolvedName}`);
|
|
|
|
|
|
return this._require(resolvedName);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
export function makeResolver(moduleName: string, contextRequire: NodeRequireFunction) {
|
|
|
const base = moduleName && moduleName.split("/").slice(0, -1).join("/");
|
|
|
|
|
|
const resolver = new ModuleResolver(contextRequire, base);
|
|
|
return (id: string) => resolver.resolve(id);
|
|
|
}
|
|
|
|
