implab/implabjs-core Files · src/cjs/ts/di/ResolverHelper.ts

working on support commonjs modules format

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             ResolverHelper.ts
        
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             / src / cjs / ts / di / ResolverHelper.ts
          
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      import { argumentNotEmptyString } from "../safe";

      import { TraceSource } from "../log/TraceSource";

      const trace = TraceSource.get(module.id);

      const mainModule = require.main;

      const mainRequire = (id: string) => mainModule.require(id);

      class ModuleResolver {

          _base: string;

          _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);

      }

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				import { argumentNotEmptyString } from "../safe";
				import { TraceSource } from "../log/TraceSource";

				const trace = TraceSource.get(module.id);

				const mainModule = require.main;
				const mainRequire = (id: string) => mainModule.require(id);

				class ModuleResolver {
				_base: string;
				_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);
				}