Convert tokens from Pulsar/Atom Spec into JS Spec expectations

convert-tokens-to-spec.js

/**
 * Converts a 'tokens' array into a spec that can be dropped into your spec file.
 * Assuming a setup with the following:
 * `let { tokens } = grammar.tokenizeLine("your test text here"); const convert = require("convert-tokens-to-spec.js"); convert(tokens);`
 */

module.exports =
function convertTokensToSpec(tokens) {
  let textOutput = "";

  for (let i = 0; i < tokens.length; i++) {

    let scopes = tokens[i].scopes;
    let scopeArrayText = [];

    scopes.forEach((element) => {
      scopeArrayText.push(`"${element}"`);
    });

    let scopeText = scopeArrayText.join(", ");

    let value;

    if (tokens[i].value === '"') {
      value = `'"'`;
    } else if (tokens[i].value === "\n") {
      value = `"\\n"`;
    } else if (tokens[i].value.includes("\n")) {
      value = `"\\n${tokens[i].value.replace("\n", "")}"`;
    } else {
      value = `"${tokens[i].value}"`;
    }

    textOutput +=
      `\nexpect(tokens[${i}]).toEqual({\n  value: ${value},\n  scopes: [ ${scopeText} ]\n});\n`;
  }

  const fs = require("fs");
  fs.writeFileSync("spec-example.js", textOutput, { encoding: "utf8" });
}