add initial marp implementation with sample content and build configuration

node_modules/katex/src/spacingData.js

@@ -0,0 +1,108 @@
+// @flow
+/**
+ * Describes spaces between different classes of atoms.
+ */
+import type {Measurement} from "./units";
+
+const thinspace: Measurement = {
+    number: 3,
+    unit: "mu",
+};
+const mediumspace: Measurement = {
+    number: 4,
+    unit: "mu",
+};
+const thickspace: Measurement = {
+    number: 5,
+    unit: "mu",
+};
+
+// Making the type below exact with all optional fields doesn't work due to
+// - https://github.com/facebook/flow/issues/4582
+// - https://github.com/facebook/flow/issues/5688
+// However, since *all* fields are optional, $Shape<> works as suggested in 5688
+// above.
+export type Spacings = $Shape<{
+    mord: Measurement,
+    mop: Measurement,
+    mbin: Measurement,
+    mrel: Measurement,
+    mopen: Measurement,
+    mclose: Measurement,
+    mpunct: Measurement,
+    minner: Measurement,
+}> & {};
+
+// Spacing relationships for display and text styles
+export const spacings: {[$Keys<Spacings>]: Spacings} = {
+    mord: {
+        mop: thinspace,
+        mbin: mediumspace,
+        mrel: thickspace,
+        minner: thinspace,
+    },
+    mop: {
+        mord: thinspace,
+        mop: thinspace,
+        mrel: thickspace,
+        minner: thinspace,
+    },
+    mbin: {
+        mord: mediumspace,
+        mop: mediumspace,
+        mopen: mediumspace,
+        minner: mediumspace,
+    },
+    mrel: {
+        mord: thickspace,
+        mop: thickspace,
+        mopen: thickspace,
+        minner: thickspace,
+    },
+    mopen: {},
+    mclose: {
+        mop: thinspace,
+        mbin: mediumspace,
+        mrel: thickspace,
+        minner: thinspace,
+    },
+    mpunct: {
+        mord: thinspace,
+        mop: thinspace,
+        mrel: thickspace,
+        mopen: thinspace,
+        mclose: thinspace,
+        mpunct: thinspace,
+        minner: thinspace,
+    },
+    minner: {
+        mord: thinspace,
+        mop: thinspace,
+        mbin: mediumspace,
+        mrel: thickspace,
+        mopen: thinspace,
+        mpunct: thinspace,
+        minner: thinspace,
+    },
+};
+
+// Spacing relationships for script and scriptscript styles
+export const tightSpacings: {[$Keys<Spacings>]: Spacings} = {
+    mord: {
+        mop: thinspace,
+    },
+    mop: {
+        mord: thinspace,
+        mop: thinspace,
+    },
+    mbin: {},
+    mrel: {},
+    mopen: {},
+    mclose: {
+        mop: thinspace,
+    },
+    mpunct: {},
+    minner: {
+        mop: thinspace,
+    },
+};