Function printAttributes

src/language-html/print/tag.js:221–330

(path, options, print)

}

function printAttributes(path, options, print) {
  const { node } = path;

  const { attrs: attributes = [], startTagComments = [] } = node;

  if (attributes.length === 0 && startTagComments.length === 0) {
    return node.isSelfClosing
      ? /**
         *     <br />
         *        ^
         */
        " "
      : "";
  }

  const ignoreAttributeData =
    node.prev?.kind === "comment" &&
    getPrettierIgnoreAttributeCommentData(node.prev.value);

  const hasPrettierIgnoreAttribute =
    typeof ignoreAttributeData === "boolean"
      ? () => ignoreAttributeData
      : Array.isArray(ignoreAttributeData)
        ? (attribute) => ignoreAttributeData.includes(attribute.rawName)
        : () => false;

  const properties = ["attrs", "startTagComments"].filter((property) =>
    isNonEmptyArray(node[property]),
  );
  const printedAttributes = properties.flatMap((property) =>
    path.map(
      ({ node }) => ({
        loc: locStart(node),
        printed:
          node.kind === "attribute" && hasPrettierIgnoreAttribute(node)
            ? replaceEndOfLine(
                options.originalText.slice(locStart(node), locEnd(node)),
              )
            : print(),
      }),
      property,
    ),
  );

  if (properties.length > 1) {
    printedAttributes.sort((a, b) => a.loc - b.loc);
  }

  const forceNotToBreakAttrContent =
    node.kind === "element" &&
    node.fullName === "script" &&
    attributes.length === 1 &&
    attributes[0].fullName === "src" &&
    node.children.length === 0 &&
    startTagComments.length === 0;
  const shouldForceBreak = startTagComments.some(
    (comment) => comment.type === "single",
  );