Method isMappedKey

content_scripts/mode_key_handler.js:89–93

(keyChar)

  // This tests whether there is a mapping of keyChar in the current key state (and accounts for
  // pass keys).
  isMappedKey(keyChar) {
    // TODO(philc): tweak the generated js.
    return ((this.keyState.filter((mapping) => keyChar in mapping))[0] != null) &&
      !this.isPassKey(keyChar);
  }

  // This tests whether keyChar is a digit (and accounts for pass keys).
  isCountKey(keyChar) {