up n_m

node_modules/@mdx-js/mdx/lib/util/estree-util-to-binary-addition.js

@@ -0,0 +1,25 @@
+/**
+ * @typedef {import('estree-jsx').Expression} Expression
+ */
+
+import {ok as assert} from 'devlop'
+
+/**
+ * @param {ReadonlyArray<Expression>} expressions
+ *   Expressions.
+ * @returns {Expression}
+ *   Addition.
+ */
+export function toBinaryAddition(expressions) {
+  let index = -1
+  /** @type {Expression | undefined} */
+  let left
+
+  while (++index < expressions.length) {
+    const right = expressions[index]
+    left = left ? {type: 'BinaryExpression', left, operator: '+', right} : right
+  }
+
+  assert(left, 'expected non-empty `expressions` to be passed')
+  return left
+}