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resolver.js
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var path = require("path");
var shelljs = require("shelljs");
var createInnerCallback = require("enhanced-resolve/lib/createInnerCallback");
var platform = process.env.PLATFORM;
exports.readPackageJson = function readPackageJson(dir) {
var packageJson = path.join(dir, "package.json");
if (shelljs.test("-f", packageJson)) {
return JSON.parse(shelljs.cat(packageJson));
} else {
return {};
}
};
exports.getPackageMain = function(packageDir) {
if (shelljs.test("-f", packageDir + ".js")) {
return packageDir + ".js";
}
var data = exports.readPackageJson(packageDir);
if (data.main) {
var main = data.main;
if (/\.js$/i.test(main)) {
return path.join(packageDir, main);
} else {
return path.join(packageDir, main + ".js");
}
} else {
var indexPath = path.join(packageDir, "index.js");
if (shelljs.test("-f", indexPath)) {
return path.join(packageDir, "index.js");
} else {
throw new Error("Main module not found for: " + packageDir);
}
}
};
exports.TnsResolver = {
apply: function(resolver) {
var plugin = this;
resolver.plugin('module', function(request, callback) {
var resolvedFile = null;
//Remove leading backslash on Windows!
var moduleName = request.request.replace(/^\\/, "");
if (plugin.isCoreDirModule(moduleName)) {
resolvedFile = plugin.resolveCoreDirModule(moduleName);
} else if (plugin.isCoreFileModule(moduleName)) {
var tnsPath = path.join("node_modules/tns-core-modules", moduleName);
resolvedFile = plugin.resolveFileModule(tnsPath);
} else if (plugin.isNonCoreFileModule(moduleName)) {
resolvedFile = plugin.resolveNonCoreFileModule(moduleName);
} else if (plugin.isNonCoreDirModule(moduleName)) {
resolvedFile = plugin.resolveNonCoreDirModule(moduleName);
} else if (plugin.isAppFileModule(moduleName)) {
resolvedFile = plugin.resolveAppFileModule(moduleName);
} else if (plugin.isAppDirModule(moduleName)) {
resolvedFile = plugin.resolveAppDirModule(moduleName);
} else if (plugin.isNativeScriptAngularDirModule(moduleName)) {
resolvedFile = plugin.resolveNativeScriptAngularDirModule(moduleName);
} else if (plugin.isNativeScriptAngularFileModule(moduleName)) {
resolvedFile = plugin.resolveNativeScriptAngularFileModule(moduleName);
}
if (!resolvedFile) {
// "Normal" module, resolve with given callback.
callback();
return;
}
//Turn Windows backslashes to slashes
resolvedFile = resolvedFile.replace(/\\/g, "/");
// Resolve to discovered "real" module name.
//
// Taken from "[email protected]", ModuleAliasPlugin.js
var newRequestStr = resolvedFile;
var newRequest = this.parse(newRequestStr);
var obj = {
path: request.path,
request: newRequest.path,
query: newRequest.query,
directory: newRequest.directory
};
var newCallback = createInnerCallback(callback, callback, "aliased with mapping " + JSON.stringify(moduleName) + " to " + JSON.stringify(resolvedFile));
if(newRequest.module) return this.doResolve("module", obj, newCallback);
if(newRequest.directory) return this.doResolve("directory", obj, newCallback);
return this.doResolve(["file", "directory"], obj, newCallback);
});
},
isCoreDirModule: function(moduleName) {
var tnsPath = path.join("node_modules/tns-core-modules", moduleName);
return shelljs.test("-d", tnsPath);
},
isNativeScriptAngularDirModule: function(moduleName) {
var tnsPath = path.join("node_modules/nativescript-angular/node_modules", moduleName);
return shelljs.test("-d", tnsPath);
},
isNonCoreDirModule: function(moduleName) {
var modulePath = path.join("node_modules", moduleName);
return shelljs.test("-d", modulePath);
},
resolveCoreDirModule: function(tnsModule) {
var tnsPath = path.join("node_modules/tns-core-modules", tnsModule);
return this.getDirModule(tnsPath);
},
resolveNonCoreDirModule: function(moduleName) {
var modulePath = path.join("node_modules", moduleName);
return this.getDirModule(modulePath);
},
getDirModule: function(modulePath) {
var mainModule = exports.getPackageMain(modulePath);
return this.resolveFileModule(mainModule);
},
resolveFileModule: function(tnsModule) {
var result = tnsModule;
if (shelljs.test("-f", tnsModule)) {
result = tnsModule;
} else if (shelljs.test("-f", tnsModule + ".js")) {
result = tnsModule + ".js";
} else {
var platformMainModule = this.getPlatformModule(platform, tnsModule);
if (shelljs.test("-f", platformMainModule)) {
result = platformMainModule;
} else {
throw new Error("File module not found for: " + tnsModule);
}
}
//Make sure we strip both slashes and backslashes after node_modules!
return result.replace(/^node_modules[\/\\]?/i, "");
},
resolveNonCoreFileModule: function(moduleName) {
var nodeModulesPath = path.join("node_modules", moduleName);
try {
return this.resolveFileModule(nodeModulesPath);
} catch (e) {
return null;
}
},
isCoreFileModule: function(moduleName) {
var tnsPath = path.join("node_modules/tns-core-modules", moduleName);
try {
this.resolveFileModule(tnsPath);
return true;
} catch (e) {
return false;
}
},
isNativeScriptAngularFileModule: function(moduleName) {
var tnsPath = path.join("node_modules/nativescript-angular/node_modules", moduleName);
try {
this.resolveFileModule(tnsPath);
return true;
} catch (e) {
return false;
}
},
getPlatformModule: function(platform, modulePath) {
var noExtension = modulePath.replace(/\.js$/i, "");
return noExtension + "." + platform + ".js";
},
isNonCoreFileModule: function(moduleFile) {
return shelljs.test("-f", moduleFile);
},
isAppFileModule: function (moduleName) {
var modulePath = path.resolve(__dirname, "..", "..", "app", moduleName.replace(/^~/, "."));
return shelljs.test("-f", modulePath + ".js") || shelljs.test("-f", this.getPlatformModule(platform, modulePath));
},
resolveAppFileModule: function (moduleName) {
var modulePath = moduleName.replace(/^~\/?/, "");
modulePath = "./app/" + modulePath;
try {
return this.resolveFileModule(modulePath).replace(/^\.[\/\\]app/, ".");
} catch (e) {
return null;
}
},
isAppDirModule: function (moduleName) {
var modulePath = path.resolve(__dirname, "..", "..", "app", moduleName.replace(/^~/, "."));
return shelljs.test("-d", modulePath);
},
resolveAppDirModule: function (moduleName) {
var modulePath = moduleName.replace(/^~\/?/, "");
modulePath = "./app/" + modulePath;
return this.getDirModule(modulePath).replace(/^\.[\/\\]app/, ".");
},
resolveNativeScriptAngularDirModule: function(tnsModule) {
var tnsPath = path.join("node_modules/nativescript-angular/node_modules/", tnsModule);
return this.getDirModule(tnsPath);
},
resolveNativeScriptAngularFileModule: function(moduleName) {
var nodeModulesPath = path.join("node_modules/nativescript-angular/node_modules", moduleName);
try {
return this.resolveFileModule(nodeModulesPath);
} catch (e) {
return null;
}
},
};