webpack/lib/dependencies/AMDRequireDependency.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";
const NullDependency = require("./NullDependency");

class AMDRequireDependency extends NullDependency {
	constructor(block) {
		super();
		this.block = block;
	}
}

AMDRequireDependency.Template = class AMDRequireDependencyTemplate {
	apply(dep, source, runtime) {
		const depBlock = dep.block;
		const promise = runtime.blockPromise({
			block: depBlock,
			message: "AMD require"
		});

		// has array range but no function range
		if (depBlock.arrayRange && !depBlock.functionRange) {
			const startBlock = `${promise}.then(function() {`;
			const endBlock = `;}).catch(${runtime.onError()})`;
			source.replace(
				depBlock.outerRange[0],
				depBlock.arrayRange[0] - 1,
				startBlock
			);
			source.replace(
				depBlock.arrayRange[1],
				depBlock.outerRange[1] - 1,
				endBlock
			);
			return;
		}

		// has function range but no array range
		if (depBlock.functionRange && !depBlock.arrayRange) {
			const startBlock = `${promise}.then((`;
			const endBlock = `).bind(exports, __webpack_require__, exports, module)).catch(${runtime.onError()})`;
			source.replace(
				depBlock.outerRange[0],
				depBlock.functionRange[0] - 1,
				startBlock
			);
			source.replace(
				depBlock.functionRange[1],
				depBlock.outerRange[1] - 1,
				endBlock
			);
			return;
		}

		// has array range, function range, and errorCallbackRange
		if (
			depBlock.arrayRange &&
			depBlock.functionRange &&
			depBlock.errorCallbackRange
		) {
			const startBlock = `${promise}.then(function() { `;
			const errorRangeBlock = `}${
				depBlock.functionBindThis ? ".bind(this)" : ""
			}).catch(`;
			const endBlock = `${
				depBlock.errorCallbackBindThis ? ".bind(this)" : ""
			})`;

			source.replace(
				depBlock.outerRange[0],
				depBlock.arrayRange[0] - 1,
				startBlock
			);
			source.insert(
				depBlock.arrayRange[0] + 0.9,
				"var __WEBPACK_AMD_REQUIRE_ARRAY__ = "
			);
			source.replace(
				depBlock.arrayRange[1],
				depBlock.functionRange[0] - 1,
				"; ("
			);
			source.insert(
				depBlock.functionRange[1],
				").apply(null, __WEBPACK_AMD_REQUIRE_ARRAY__);"
			);
			source.replace(
				depBlock.functionRange[1],
				depBlock.errorCallbackRange[0] - 1,
				errorRangeBlock
			);
			source.replace(
				depBlock.errorCallbackRange[1],
				depBlock.outerRange[1] - 1,
				endBlock
			);
			return;
		}

		// has array range, function range, but no errorCallbackRange
		if (depBlock.arrayRange && depBlock.functionRange) {
			const startBlock = `${promise}.then(function() { `;
			const endBlock = `}${
				depBlock.functionBindThis ? ".bind(this)" : ""
			}).catch(${runtime.onError()})`;
			source.replace(
				depBlock.outerRange[0],
				depBlock.arrayRange[0] - 1,
				startBlock
			);
			source.insert(
				depBlock.arrayRange[0] + 0.9,
				"var __WEBPACK_AMD_REQUIRE_ARRAY__ = "
			);
			source.replace(
				depBlock.arrayRange[1],
				depBlock.functionRange[0] - 1,
				"; ("
			);
			source.insert(
				depBlock.functionRange[1],
				").apply(null, __WEBPACK_AMD_REQUIRE_ARRAY__);"
			);
			source.replace(
				depBlock.functionRange[1],
				depBlock.outerRange[1] - 1,
				endBlock
			);
		}
	}
};

module.exports = AMDRequireDependency;