x/eta@v1.12.3/utils.ts

Embedded JS template engine for Node, Deno, and the browser. Lighweight, fast, and pluggable. Written in TypeScript
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// TODO: allow '-' to trim up until newline. Use [^\S\n\r] instead of \s// TODO: only include trimLeft polyfill if not in ES6
import { trimLeft, trimRight } from "./polyfills.ts";
/* TYPES */
import type { EtaConfig } from "./config.ts";
interface EscapeMap { "&": "&amp;"; "<": "&lt;"; ">": "&gt;"; '"': "&quot;"; "'": "&#39;"; [index: string]: string;}
/* END TYPES */
export function hasOwnProp(obj: object, prop: string): boolean { return Object.prototype.hasOwnProperty.call(obj, prop);}
export function copyProps<T>(toObj: T, fromObj: T): T { for (const key in fromObj) { if (hasOwnProp((fromObj as unknown) as object, key)) { toObj[key] = fromObj[key]; } } return toObj;}
/** * Takes a string within a template and trims it, based on the preceding tag's whitespace control and `config.autoTrim` */
function trimWS( str: string, config: EtaConfig, wsLeft: string | false, wsRight?: string | false,): string { let leftTrim; let rightTrim;
if (Array.isArray(config.autoTrim)) { // kinda confusing // but _}} will trim the left side of the following string leftTrim = config.autoTrim[1]; rightTrim = config.autoTrim[0]; } else { leftTrim = rightTrim = config.autoTrim; }
if (wsLeft || wsLeft === false) { leftTrim = wsLeft; }
if (wsRight || wsRight === false) { rightTrim = wsRight; }
if (!rightTrim && !leftTrim) { return str; }
if (leftTrim === "slurp" && rightTrim === "slurp") { return str.trim(); }
if (leftTrim === "_" || leftTrim === "slurp") { // console.log('trimming left' + leftTrim) // full slurp
str = trimLeft(str); } else if (leftTrim === "-" || leftTrim === "nl") { // nl trim str = str.replace(/^(?:\r\n|\n|\r)/, ""); }
if (rightTrim === "_" || rightTrim === "slurp") { // full slurp str = trimRight(str); } else if (rightTrim === "-" || rightTrim === "nl") { // nl trim str = str.replace(/(?:\r\n|\n|\r)$/, "") // TODO: make sure this gets \r\n ; }
return str;}
/** * A map of special HTML characters to their XML-escaped equivalents */
const escMap: EscapeMap = { "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;",};
function replaceChar(s: string): string { return escMap[s];}
/** * XML-escapes an input value after converting it to a string * * @param str - Input value (usually a string) * @returns XML-escaped string */
function XMLEscape(str: any): string { // eslint-disable-line @typescript-eslint/no-explicit-any // To deal with XSS. Based on Escape implementations of Mustache.JS and Marko, then customized. const newStr = String(str); if (/[&<>"']/.test(newStr)) { return newStr.replace(/[&<>"']/g, replaceChar); } else { return newStr; }}
export { trimWS, XMLEscape };