masking option

[azu]

Sometimes, we want to mask Code node in Paragraph node.
In almost case, textlint rules do not want to handle Code node.

• fix: センテンス内の「」や""などにおける区切り文字を考慮するように修正 textlint-ja/textlint-rule-no-doubled-joshi#47
• https://github.com/azu/textlint-rule-en-max-word-count/blob/e94309ce6a4770b2de3113c0b094f06499e58009/src/textlint-rule-en-max-word-count.js#L30-L41

Example

const source = new StringSource(AST);
const result = source.toString({
  replacer: (node, index) => {
    if (node.type === "Code") {
      return "_".repeat(node.value.length)
    }
    return node
  },
});

Inspired by JSON.stringify() - JavaScript | MDN

[azu]

This API works, but it is unsafe.
value length is changed, original* method will not work correct.

[azu]

Supported command:

• delete node
• mask value

    describe("replacer option", function () {
        it("can modify specify node", function () {
            const originalText = "This is `code`.";
            const AST = parse(originalText);
            const source = new StringSource(AST, {
                replacer({ node, maskValue }) {
                    if (node.type === "Code") {
                        return maskValue("_");
                    }
                    return;
                }
            });
            assert.strictEqual(source.toString(), "This is ____.");
        });
        it("modify and get original index", function () {
            const AST = parse("This is `TEST`.");
            const source = new StringSource(AST, {
                replacer({ node, deleteNode }) {
                    if (node.type === "Code") {
                        return deleteNode();
                    }
                    return;
                }
            });
            assert.strictEqual(source.toString(), "This is .");
        });
    })