marko/src/runtime/html/helpers/props-script.js

UI Components + streaming, async, high performance, HTML templating for Node.js and the browser.

"use strict";

var attrAssignment = require("./attr").a;
var escapeScript = require("./escape-script-placeholder");
var assignPropsFunction = `
    function ap_(p) {
        var s = document.currentScript;
        var ps = s.previousSibling;
        for (var k in p) ps[k] = p[k];
        s.parentNode.removeChild(s);
    }
`
  .replace(/\s+/g, " ")
  .replace(/([\W]) (.)/g, "$1$2")
  .replace(/(.) ([\W])/g, "$1$2")
  .trim();

module.exports = function propsForPreviousNode(props, out) {
  var cspNonce = out.global.cspNonce;
  var nonceAttr = cspNonce ? " nonce" + attrAssignment(cspNonce) : "";

  out.w("<script" + nonceAttr + ">");

  if (!out.global.assignPropsFunction) {
    out.w(assignPropsFunction);
    out.global.assignPropsFunction = true;
  }

  out.w("ap_(" + escapeScript(JSON.stringify(props)) + ");</script>");
};