Function dedent

packages/core/test/render3/utils.ts:10–28

(strings: TemplateStringsArray, ...values: any[])

/** Template string function that can be used to strip indentation from a given string literal. */
export function dedent(strings: TemplateStringsArray, ...values: any[]) {
  let joinedString = '';
  for (let i = 0; i < values.length; i++) {
    joinedString += `${strings[i]}${values[i]}`;
  }
  joinedString += strings[strings.length - 1];
  const lines = joinedString.split('\n');
  while (isBlank(lines[0])) {
    lines.shift();
  }
  while (isBlank(lines[lines.length - 1])) {
    lines.pop();
  }
  let minWhitespacePrefix = lines.reduce(
    (min, line) => Math.min(min, numOfWhiteSpaceLeadingChars(line)),
    Number.MAX_SAFE_INTEGER,
  );
  return lines.map((line) => line.substring(minWhitespacePrefix)).join('\n');
}

/**
 * Tests to see if the line is blank.