--- /dev/null
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+
+/**
+ * @typedef {string} cell
+ */
+
+/**
+ * @typedef {cell[]} validateData~column
+ */
+
+/**
+ * @param {column[]} rows
+ * @returns {undefined}
+ */
+exports.default = rows => {
+ if (!Array.isArray(rows)) {
+ throw new TypeError('Table data must be an array.');
+ }
+
+ if (rows.length === 0) {
+ throw new Error('Table must define at least one row.');
+ }
+
+ if (rows[0].length === 0) {
+ throw new Error('Table must define at least one column.');
+ }
+
+ const columnNumber = rows[0].length;
+
+ for (const cells of rows) {
+ if (!Array.isArray(cells)) {
+ throw new TypeError('Table row data must be an array.');
+ }
+
+ if (cells.length !== columnNumber) {
+ throw new Error('Table must have a consistent number of cells.');
+ }
+
+ // @todo Make an exception for newline characters.
+ // @see https://github.com/gajus/table/issues/9
+ for (const cell of cells) {
+ if (/[\u0001-\u001A]/.test(cell)) {
+ throw new Error('Table data must not contain control characters.');
+ }
+ }
+ }
+};
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