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copilot/packages/pseudo-yaml-ast
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README.md

pseudo-yaml-ast

License: MPL 2.0 npm standard-readme compliant

Parse a YAML string into an object with location properties.

Table of Contents

Install

yarn add --dev pseudo-yaml-ast

Usage

import yamlAST, { loc } from 'pseudo-yaml-ast';
import assert from 'assert';

const ast = yamlAST(`
  obj:
    arr:
    - nums:
      - 1
      - 2
      - 3
      strs1:
      - '1'
      - '2'
      - '3'
    str: '1'
    num: 1
`);

assert.deepEqual(Object.keys(ast), ['obj']);
assert.deepEqual(ast[loc].start.line, 2);
assert.deepEqual(ast[loc].end.line, 14);

assert.deepEqual(Object.keys(ast.obj), ['arr', 'str', 'num']);
assert.deepEqual(ast.obj[loc].start.line, 2);
assert.deepEqual(ast.obj[loc].end.line, 13);

assert.deepEqual(ast.obj.str[loc].start.line, 12);
assert.deepEqual(ast.obj.str[loc].end.line, 12);
assert.deepEqual(ast.obj.num[loc].start.line, 13);
assert.deepEqual(ast.obj.num[loc].end.line, 13);
assert.deepEqual(ast.obj.arr[0][loc].start.line, 4);
assert.deepEqual(ast.obj.arr[0][loc].end.line, 12);

assert.deepEqual(Object.keys(ast.obj.arr[0]), ['nums', 'strs1']);
assert.deepEqual(ast.obj.arr[0].nums[loc].start.line, 4);
assert.deepEqual(ast.obj.arr[0].nums[loc].end.line, 8);
assert.deepEqual(ast.obj.arr[0].strs1[loc].start.line, 8);
assert.deepEqual(ast.obj.arr[0].strs1[loc].end.line, 12);

License

MPL-2.0