ngx-scrolltop
Version:
Lightweight, Material Design inspired button for scroll-to-top of the page. No dependencies. Pure Angular!
35 lines • 1.54 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.addDeclarationToAppModule = addDeclarationToAppModule;
const core_1 = require("@angular-devkit/core");
const schematics_1 = require("@angular-devkit/schematics");
const ts = require("typescript");
const ast_utils_1 = require("../utility/ast-utils");
const change_1 = require("../utility/change");
function addDeclarationToAppModule(appModule) {
return (host) => {
if (!appModule) {
return host;
}
// Part I: Construct path and read file
const modulePath = (0, core_1.normalize)('/' + appModule);
const text = host.read(modulePath);
if (text === null) {
throw new schematics_1.SchematicsException(`File ${modulePath} does not exist.`);
}
const sourceText = text.toString('utf-8');
const source = ts.createSourceFile(modulePath, sourceText, ts.ScriptTarget.Latest, true);
// Part II: Find out, what to change
const changes = (0, ast_utils_1.addSymbolToNgModuleMetadata)(source, modulePath, 'imports', 'NgxScrollTopModule', 'ngx-scrolltop');
// Part III: Apply changes
const recorder = host.beginUpdate(modulePath);
for (const change of changes) {
if (change instanceof change_1.InsertChange) {
recorder.insertLeft(change.pos, change.toAdd);
}
}
host.commitUpdate(recorder);
return host;
};
}
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