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tslintjson.ts
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tslintjson.ts
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import * as ts from "typescript";
import { IOptions as TslintOptions } from "tslint";
import * as path from "path";
import { Options } from "../";
import { getConfigFileName } from "../utils";
export interface AdditionalFormatSettings {
$noConsecutiveBlankLines: boolean;
}
export async function makeFormatCodeOptions(fileName: string, opts: Options, formatSettings: ts.FormatCodeSettings): Promise<ts.FormatCodeSettings> {
const rules = await getRules(fileName, opts);
if (!rules) {
return formatSettings;
}
const indent = rules.get("indent");
const whitespace = rules.get("whitespace");
if (indent && indent.ruleArguments) {
switch (indent.ruleArguments[0]) {
case "spaces":
formatSettings.convertTabsToSpaces = true;
break;
case "tabs":
formatSettings.convertTabsToSpaces = false;
break;
default:
break;
}
}
if (whitespace && whitespace.ruleArguments) {
for (let p in whitespace.ruleArguments) {
switch (whitespace.ruleArguments[p]) {
case "check-branch":
formatSettings.insertSpaceAfterKeywordsInControlFlowStatements = true;
break;
case "check-operator":
formatSettings.insertSpaceBeforeAndAfterBinaryOperators = true;
break;
case "check-separator":
formatSettings.insertSpaceAfterCommaDelimiter = true;
formatSettings.insertSpaceAfterSemicolonInForStatements = true;
break;
case "check-typecast":
formatSettings.insertSpaceAfterTypeAssertion = true;
break;
default:
break;
}
}
}
return formatSettings;
}
export async function postProcess(fileName: string, formattedCode: string, opts: Options, _formatSettings: ts.FormatCodeSettings): Promise<string> {
const rules = await getRules(fileName, opts);
if (!rules) {
return formattedCode;
}
if (rules.has("no-consecutive-blank-lines")) {
formattedCode = formattedCode.replace(/\n+^$/mg, "\n");
}
return formattedCode;
}
async function getRules(fileName: string, opts: Options): Promise<Map<string, Partial<TslintOptions>> | undefined> {
const baseDir = opts.baseDir ? path.resolve(opts.baseDir) : path.dirname(path.resolve(fileName));
let configFileName: string | null;
if (opts.tslintFile && path.isAbsolute(opts.tslintFile)) {
configFileName = opts.tslintFile;
} else {
configFileName = getConfigFileName(baseDir, opts.tslintFile || "tslint.json");
}
if (!configFileName) {
return undefined;
}
if (opts.verbose) {
console.log(`read ${configFileName} for ${fileName}`);
}
const { Configuration } = await import("tslint");
const { rules } = Configuration.loadConfigurationFromPath(configFileName);
return rules;
}