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* as async from \"async\";\nimport * as diff from \"diff\";\nimport * as fs from \"fs\";\nimport * as glob from \"glob\";\nimport * as lodash from \"lodash\";\nimport * as os from \"os\";\nimport * as path from \"path\";\nimport * as ts from \"typescript\";\n\nimport { Logger } from \"log4js\";\n\nimport pad = require(\"pad\");\n\nimport { EmitOutput } from \"../compiler/emit-output\";\nimport { BundleItem } from \"./bundle-item\";\nimport { Queued } from \"./queued\";\n\nexport class DependencyWalker {\n\n private requireRegexp = /\\brequire\\b/;\n private walk = require(\"acorn-walk\");\n\n constructor(private log: Logger) {}\n\n public hasRequire(s: string): boolean {\n return this.requireRegexp.test(s);\n }\n\n public collectTypescriptDependencies(queue: Queued[]): number {\n\n let dependencyCount: number = 0;\n const ambientModuleNames = this.collectAmbientModules(queue);\n\n queue.forEach((queued) => {\n\n queued.item.dependencies = this.findUnresolvedTsRequires(queued.emitOutput);\n\n const resolvedModules = (queued.emitOutput.sourceFile as any).resolvedModules;\n\n if (resolvedModules && !queued.emitOutput.isDeclarationFile) {\n\n if (lodash.isMap(resolvedModules)) { // Typescript 2.2+\n resolvedModules.forEach((resolvedModule: any, moduleName: string) => {\n this.addBundleItem(queued, resolvedModule, moduleName, ambientModuleNames);\n });\n }\n else { // Typescript 1.6.2 - 2.1.6\n Object.keys(resolvedModules).forEach((moduleName: string) => {\n const resolvedModule = resolvedModules[moduleName];\n this.addBundleItem(queued, resolvedModule, moduleName, ambientModuleNames);\n });\n }\n }\n\n dependencyCount += queued.item.dependencies.length;\n });\n\n this.validateCase(queue);\n\n return dependencyCount;\n }\n\n public collectJavascriptDependencies(bundleItem: BundleItem,\n onDependenciesCollected: (moduleNames: string[]) => void): void {\n\n const moduleNames: string[] = [];\n const expressions: any[] = [];\n\n const isRequire = (node: any) => {\n return node.type === \"CallExpression\" &&\n node.callee.type === \"Identifier\" &&\n node.callee.name === \"require\";\n };\n\n const visitNode = (node: any, state: any, c: any) => {\n if (!this.hasRequire(bundleItem.source.slice(node.start, node.end))) {\n return;\n }\n this.walk.base[node.type](node, state, c);\n if (isRequire(node) && node.arguments.length > 0) {\n if (node.arguments[0].type === \"Literal\") {\n if (!lodash.isString(node.arguments[0].value)) {\n this.log.error(\"Unexpected literal value: %s%sRequired by: %s\",\n node.arguments[0].value, os.EOL, bundleItem.filename);\n }\n moduleNames.push(node.arguments[0].value);\n }\n else {\n expressions.push(node.arguments[0]);\n }\n }\n };\n\n if (bundleItem.ast) {\n this.walk.recursive(bundleItem.ast, null, {\n Expression: visitNode,\n Statement: visitNode\n });\n }\n\n this.addDynamicDependencies(expressions, bundleItem, (dynamicDependencies) => {\n onDependenciesCollected(moduleNames.concat(dynamicDependencies));\n });\n }\n\n private collectAmbientModules(queue: Queued[]): string[] {\n\n const ambientModuleNames: string[] = [];\n\n queue.forEach((queued) => {\n if (queued.emitOutput.ambientModuleNames) {\n ambientModuleNames.push(...queued.emitOutput.ambientModuleNames);\n }\n });\n\n return ambientModuleNames;\n }\n\n private addBundleItem(queued: Queued, resolvedModule: any, moduleName: string, ambientModuleNames: string[]) {\n if (ambientModuleNames.indexOf(moduleName) === -1) {\n queued.item.dependencies.push(\n new BundleItem(moduleName, resolvedModule && resolvedModule.resolvedFileName)\n );\n }\n }\n\n private findUnresolvedTsRequires(emitOutput: EmitOutput): BundleItem[] {\n\n const dependencies: BundleItem[] = [];\n\n if (emitOutput.isDeclarationFile) {\n return dependencies;\n }\n\n const visitNode = (node: ts.Node) => {\n\n if (node.kind === ts.SyntaxKind.CallExpression) {\n\n const ce = (node as ts.CallExpression);\n\n const expression = ce.expression ?\n (ce.expression as ts.LiteralExpression) :\n undefined;\n\n const argument = ce.arguments && ce.arguments.length ?\n (ce.arguments[0] as ts.LiteralExpression) :\n undefined;\n\n if (expression && expression.text === \"require\" &&\n argument && typeof argument.text === \"string\") {\n dependencies.push(new BundleItem(argument.text));\n }\n }\n\n ts.forEachChild(node, visitNode);\n };\n\n visitNode(emitOutput.sourceFile);\n\n return dependencies;\n }\n\n private addDynamicDependencies(expressions: any[],\n bundleItem: BundleItem,\n onDynamicDependenciesAdded: (dynamicDependencies: string[]) => void) {\n\n const dynamicDependencies: string[] = [];\n\n if (expressions.length === 0) {\n process.nextTick(() => {\n onDynamicDependenciesAdded(dynamicDependencies);\n });\n return;\n }\n\n async.each(expressions, (expression, onExpressionResolved) => {\n\n const dynamicModuleName = this.parseDynamicRequire(expression);\n const directory = path.dirname(bundleItem.filename);\n let pattern: string;\n\n if (dynamicModuleName && dynamicModuleName !== \"*\") {\n if (new BundleItem(dynamicModuleName).isNpmModule()) {\n dynamicDependencies.push(dynamicModuleName);\n onExpressionResolved();\n }\n else {\n pattern = path.join(directory, dynamicModuleName);\n glob(pattern, (globError, matches) => {\n if (globError) {\n throw globError;\n }\n async.each(matches, (match, onMatchResolved) => {\n fs.stat(match, (statError, stats) => {\n if (statError) {\n throw statError;\n }\n if (stats.isFile()) {\n this.log.debug(\"Dynamic require: \\nexpression: [%s]\" +\n \"\\nfilename: %s\\nrequired by %s\\nglob: %s\",\n JSON.stringify(expression, undefined, 3),\n match, bundleItem.filename, pattern);\n dynamicDependencies.push(\"./\" + path.relative(directory, match));\n }\n onMatchResolved();\n });\n }, onExpressionResolved);\n });\n }\n }\n else {\n onExpressionResolved();\n }\n }, () => {\n onDynamicDependenciesAdded(dynamicDependencies);\n });\n }\n\n private parseDynamicRequire(expression: any): string {\n\n const visitNode = (node: any): string => {\n switch (node.type) {\n case \"BinaryExpression\":\n if (node.operator === \"+\") {\n return visitNode(node.left) + visitNode(node.right);\n }\n break;\n case \"ExpressionStatement\":\n return visitNode(node.expression);\n case \"Literal\":\n return node.value + \"\";\n case \"Identifier\":\n return \"*\";\n default:\n return \"\";\n }\n };\n\n return visitNode(expression);\n }\n\n private validateCase(queue: Queued[]) {\n\n const files = queue.map((q) => {\n return q.file.originalPath;\n });\n\n const fileslower = queue.map((q) => {\n return q.file.originalPath.toLowerCase();\n });\n\n queue.forEach((queued) => {\n if (queued.item.dependencies) {\n queued.item.dependencies.forEach((dependency) => {\n if (dependency.filename && files.indexOf(dependency.filename) === -1) {\n const lowerIndex = fileslower.indexOf(dependency.filename.toLowerCase());\n if (lowerIndex !== -1) {\n\n const result = diff.diffChars(files[lowerIndex], dependency.filename);\n let arrows = \"\";\n result.forEach((part) => {\n if (part.added) {\n arrows += \"^\";\n }\n else if (!part.removed){\n arrows += pad(\"\", part.count);\n }\n });\n\n throw new Error(\"Uppercase/lowercase mismatch importing \" +\n dependency.moduleName + \" from \" + queued.file.originalPath +\n \":\" + os.EOL + os.EOL +\n \"filename: \" + files[lowerIndex] + os.EOL +\n \"module name: \" + dependency.filename + os.EOL +\n \" \" + arrows + os.EOL);\n }\n }\n });\n }\n });\n }\n}\n"]} |