add initial marp implementation with sample content and build configuration

node_modules/@marp-team/marpit/lib/markdown/directives/parse.js

@@ -0,0 +1,182 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.parse = exports.default = void 0;
+var _markdownItFrontMatter = _interopRequireDefault(require("markdown-it-front-matter"));
+var _plugin = _interopRequireDefault(require("../../plugin"));
+var _comment = require("../comment");
+var directives = _interopRequireWildcard(require("./directives"));
+var _yaml = require("./yaml");
+function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+/** @module */
+
+const isDirectiveComment = token => token.type === 'marpit_comment' && token.meta.marpitParsedDirectives;
+
+/**
+ * Parse Marpit directives and store result to the slide token meta.
+ *
+ * Marpit comment plugin ans slide plugin requires already loaded to
+ * markdown-it instance.
+ *
+ * @function parse
+ * @param {MarkdownIt} md markdown-it instance.
+ * @param {Object} [opts]
+ * @param {boolean} [opts.frontMatter=true] Switch feature to support YAML
+ *     front-matter. If true, you can use Jekyll style directive setting to the
+ *     first page.
+ */
+function _parse(md, opts = {}) {
+  const {
+    marpit
+  } = md;
+  const applyBuiltinDirectives = (newProps, builtinDirectives) => {
+    let ret = {};
+    for (const prop of Object.keys(newProps)) {
+      if (builtinDirectives[prop]) {
+        ret = {
+          ...ret,
+          ...builtinDirectives[prop](newProps[prop], marpit)
+        };
+      } else {
+        ret[prop] = newProps[prop];
+      }
+    }
+    return ret;
+  };
+
+  // Front-matter support
+  const frontMatter = opts.frontMatter === undefined ? true : !!opts.frontMatter;
+  let frontMatterObject = {};
+  if (frontMatter) {
+    md.core.ruler.before('block', 'marpit_directives_front_matter', state => {
+      frontMatterObject = {};
+      if (!state.inlineMode) marpit.lastGlobalDirectives = {};
+    });
+    md.use(_markdownItFrontMatter.default, fm => {
+      frontMatterObject.text = fm;
+      const parsed = (0, _yaml.yaml)(fm, marpit.options.looseYAML ? [...Object.keys(marpit.customDirectives.global), ...Object.keys(marpit.customDirectives.local)] : false);
+      if (parsed !== false) frontMatterObject.yaml = parsed;
+    });
+  }
+
+  // Parse global directives
+  md.core.ruler.after('inline', 'marpit_directives_global_parse', state => {
+    if (state.inlineMode) return;
+    let globalDirectives = {};
+    const applyDirectives = obj => {
+      let recognized = false;
+      for (const key of Object.keys(obj)) {
+        if (directives.globals[key]) {
+          recognized = true;
+          globalDirectives = {
+            ...globalDirectives,
+            ...directives.globals[key](obj[key], marpit)
+          };
+        } else if (marpit.customDirectives.global[key]) {
+          recognized = true;
+          globalDirectives = {
+            ...globalDirectives,
+            ...applyBuiltinDirectives(marpit.customDirectives.global[key](obj[key], marpit), directives.globals)
+          };
+        }
+      }
+      return recognized;
+    };
+    if (frontMatterObject.yaml) applyDirectives(frontMatterObject.yaml);
+    for (const token of state.tokens) {
+      if (isDirectiveComment(token) && applyDirectives(token.meta.marpitParsedDirectives)) {
+        (0, _comment.markAsParsed)(token, 'directive');
+      } else if (token.type === 'inline') {
+        for (const t of token.children) {
+          if (isDirectiveComment(t) && applyDirectives(t.meta.marpitParsedDirectives)) (0, _comment.markAsParsed)(t, 'directive');
+        }
+      }
+    }
+    marpit.lastGlobalDirectives = {
+      ...globalDirectives
+    };
+  });
+
+  // Parse local directives and apply meta to slide
+  md.core.ruler.after('marpit_slide', 'marpit_directives_parse', state => {
+    if (state.inlineMode) return;
+    const slides = [];
+    const cursor = {
+      slide: undefined,
+      local: {},
+      spot: {}
+    };
+    const applyDirectives = obj => {
+      let recognized = false;
+      for (const key of Object.keys(obj)) {
+        if (directives.locals[key]) {
+          recognized = true;
+          cursor.local = {
+            ...cursor.local,
+            ...directives.locals[key](obj[key], marpit)
+          };
+        } else if (marpit.customDirectives.local[key]) {
+          recognized = true;
+          cursor.local = {
+            ...cursor.local,
+            ...applyBuiltinDirectives(marpit.customDirectives.local[key](obj[key], marpit), directives.locals)
+          };
+        }
+
+        // Spot directives
+        // (Apply local directive to only current slide by prefix "_")
+        if (key.startsWith('_')) {
+          const spotKey = key.slice(1);
+          if (directives.locals[spotKey]) {
+            recognized = true;
+            cursor.spot = {
+              ...cursor.spot,
+              ...directives.locals[spotKey](obj[key], marpit)
+            };
+          } else if (marpit.customDirectives.local[spotKey]) {
+            recognized = true;
+            cursor.spot = {
+              ...cursor.spot,
+              ...applyBuiltinDirectives(marpit.customDirectives.local[spotKey](obj[key], marpit), directives.locals)
+            };
+          }
+        }
+      }
+      return recognized;
+    };
+    if (frontMatterObject.yaml) applyDirectives(frontMatterObject.yaml);
+    for (const token of state.tokens) {
+      if (token.meta && token.meta.marpitSlideElement === 1) {
+        // Initialize Marpit directives meta
+        token.meta.marpitDirectives = {};
+        slides.push(token);
+        cursor.slide = token;
+      } else if (token.meta && token.meta.marpitSlideElement === -1) {
+        // Assign local and spot directives to meta
+        cursor.slide.meta.marpitDirectives = {
+          ...cursor.slide.meta.marpitDirectives,
+          ...cursor.local,
+          ...cursor.spot
+        };
+        cursor.spot = {};
+      } else if (isDirectiveComment(token) && applyDirectives(token.meta.marpitParsedDirectives)) {
+        (0, _comment.markAsParsed)(token, 'directive');
+      } else if (token.type === 'inline') {
+        for (const t of token.children) {
+          if (isDirectiveComment(t) && applyDirectives(t.meta.marpitParsedDirectives)) (0, _comment.markAsParsed)(t, 'directive');
+        }
+      }
+    }
+
+    // Assign global directives to meta
+    for (const token of slides) token.meta.marpitDirectives = {
+      ...token.meta.marpitDirectives,
+      ...marpit.lastGlobalDirectives
+    };
+  });
+}
+const parse = exports.parse = (0, _plugin.default)(_parse);
+var _default = exports.default = parse;