function isPlainSafeFirst()

in packages/libs/codegen/src/yaml-dump/yaml-dump.ts [272:305]

• 27 lines of code
• 23 McCabe index (conditional complexity)

function isPlainSafeFirst(c) {
  // Uses a subset of ns-char - c-indicator
  // where ns-char = nb-char - s-white.
  // No support of ( ( “?” | “:” | “-” ) /* Followed by an ns-plain-safe(c)) */ ) part
  return (
    isPrintable(c) &&
    c !== CHAR_BOM &&
    !isWhitespace(c) && // - s-white
    // - (c-indicator ::=
    // “-” | “?” | “:” | “,” | “[” | “]” | “{” | “}”
    c !== CHAR_MINUS &&
    c !== CHAR_QUESTION &&
    c !== CHAR_COLON &&
    c !== CHAR_COMMA &&
    c !== CHAR_LEFT_SQUARE_BRACKET &&
    c !== CHAR_RIGHT_SQUARE_BRACKET &&
    c !== CHAR_LEFT_CURLY_BRACKET &&
    c !== CHAR_RIGHT_CURLY_BRACKET &&
    // | “#” | “&” | “*” | “!” | “|” | “=” | “>” | “'” | “"”
    c !== CHAR_SHARP &&
    c !== CHAR_AMPERSAND &&
    c !== CHAR_ASTERISK &&
    c !== CHAR_EXCLAMATION &&
    c !== CHAR_VERTICAL_LINE &&
    c !== CHAR_EQUALS &&
    c !== CHAR_GREATER_THAN &&
    c !== CHAR_SINGLE_QUOTE &&
    c !== CHAR_DOUBLE_QUOTE &&
    // | “%” | “@” | “`”)
    c !== CHAR_PERCENT &&
    c !== CHAR_COMMERCIAL_AT &&
    c !== CHAR_GRAVE_ACCENT
  );
}