1st version

Jira_helper/node_modules/csv-parse/lib/api/init_state.js

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+import ResizeableBuffer from "../utils/ResizeableBuffer.js";
+
+// white space characters
+// https://en.wikipedia.org/wiki/Whitespace_character
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Character_Classes#Types
+// \f\n\r\t\v\u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff
+const np = 12;
+const cr = 13; // `\r`, carriage return, 0x0D in hexadécimal, 13 in decimal
+const nl = 10; // `\n`, newline, 0x0A in hexadecimal, 10 in decimal
+const space = 32;
+const tab = 9;
+
+const init_state = function (options) {
+  return {
+    bomSkipped: false,
+    bufBytesStart: 0,
+    castField: options.cast_function,
+    commenting: false,
+    // Current error encountered by a record
+    error: undefined,
+    enabled: options.from_line === 1,
+    escaping: false,
+    escapeIsQuote:
+      Buffer.isBuffer(options.escape) &&
+      Buffer.isBuffer(options.quote) &&
+      Buffer.compare(options.escape, options.quote) === 0,
+    // columns can be `false`, `true`, `Array`
+    expectedRecordLength: Array.isArray(options.columns)
+      ? options.columns.length
+      : undefined,
+    field: new ResizeableBuffer(20),
+    firstLineToHeaders: options.cast_first_line_to_header,
+    needMoreDataSize: Math.max(
+      // Skip if the remaining buffer smaller than comment
+      options.comment !== null ? options.comment.length : 0,
+      // Skip if the remaining buffer can be delimiter
+      ...options.delimiter.map((delimiter) => delimiter.length),
+      // Skip if the remaining buffer can be escape sequence
+      options.quote !== null ? options.quote.length : 0,
+    ),
+    previousBuf: undefined,
+    quoting: false,
+    stop: false,
+    rawBuffer: new ResizeableBuffer(100),
+    record: [],
+    recordHasError: false,
+    record_length: 0,
+    recordDelimiterMaxLength:
+      options.record_delimiter.length === 0
+        ? 0
+        : Math.max(...options.record_delimiter.map((v) => v.length)),
+    trimChars: [
+      Buffer.from(" ", options.encoding)[0],
+      Buffer.from("\t", options.encoding)[0],
+    ],
+    wasQuoting: false,
+    wasRowDelimiter: false,
+    timchars: [
+      Buffer.from(Buffer.from([cr], "utf8").toString(), options.encoding),
+      Buffer.from(Buffer.from([nl], "utf8").toString(), options.encoding),
+      Buffer.from(Buffer.from([np], "utf8").toString(), options.encoding),
+      Buffer.from(Buffer.from([space], "utf8").toString(), options.encoding),
+      Buffer.from(Buffer.from([tab], "utf8").toString(), options.encoding),
+    ],
+  };
+};
+
+export { init_state };